diff --git a/src/Solcast/Clients/ForecastClient.cs b/src/Solcast/Clients/ForecastClient.cs
index f5e728c..5667e37 100644
--- a/src/Solcast/Clients/ForecastClient.cs
+++ b/src/Solcast/Clients/ForecastClient.cs
@@ -381,9 +381,9 @@ public async Task<ApiResponse<ForecastsDataResponse>> GetForecastRadiationAndWea
         /// <param name="hours">The number of hours to return in the response. Default is 24.</param>
         /// <param name="period">Length of the averaging period in ISO 8601 format. Default is PT30M.</param>
         /// <param name="depoVelocPm10">Deposition or settling velocity of PM2.5 particulates. [m/s]. Default is 0.0009.</param>
-        /// <param name="depoVelocPm2_5">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
+        /// <param name="depoVelocPm25">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
         /// <param name="pm10">Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
-        /// <param name="pm2_5">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
+        /// <param name="pm25">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
         /// <param name="tilt">The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.</param>
         /// <param name="cleaningThreshold">Amount of daily rainfall required to clean the panels (mm). Default is 6.0.</param>
         /// <param name="initialSoiling">Initial percentage of energy lost due to soiling at time zero in the rainfall series input. If not provided, Solcast will perform a ramp up series calculation to accurately determine this value. If provided must be >= 0 and < 0.3437.</param>
@@ -398,9 +398,9 @@ public async Task<ApiResponse<ForecastsDataResponse>> GetForecastHsu(
             int? hours = null,
             string period = null,
             double? depoVelocPm10 = null,
-            double? depoVelocPm2_5 = null,
+            double? depoVelocPm25 = null,
             List<double?> pm10 = null,
-            List<double?> pm2_5 = null,
+            List<double?> pm25 = null,
             double? tilt = null,
             double? cleaningThreshold = null,
             double? initialSoiling = null,
@@ -419,14 +419,14 @@ public async Task<ApiResponse<ForecastsDataResponse>> GetForecastHsu(
                 if (hours.HasValue) parameters.Add("hours", hours.Value.ToString());
                 if (period != null) parameters.Add("period", period.ToString());
                 if (depoVelocPm10.HasValue) parameters.Add("depoVelocPm10", depoVelocPm10.Value.ToString());
-                if (depoVelocPm2_5.HasValue) parameters.Add("depoVelocPm2_5", depoVelocPm2_5.Value.ToString());
-                if (pm10 != null && pm10.Any()) parameters.Add("pm10", string.Join(",", pm10));
-                if (pm2_5 != null && pm2_5.Any()) parameters.Add("pm2_5", string.Join(",", pm2_5));
+                if (depoVelocPm25.HasValue) parameters.Add("depoVelocPm25", depoVelocPm25.Value.ToString());
+                if (pm10 != null) parameters.Add("pm10", pm10.ToString());
+                if (pm25 != null) parameters.Add("pm25", pm25.ToString());
                 if (tilt.HasValue) parameters.Add("tilt", tilt.Value.ToString());
                 if (cleaningThreshold.HasValue) parameters.Add("cleaningThreshold", cleaningThreshold.Value.ToString());
                 if (initialSoiling.HasValue) parameters.Add("initialSoiling", initialSoiling.Value.ToString());
                 if (rainAccumPeriod.HasValue) parameters.Add("rainAccumPeriod", rainAccumPeriod.Value.ToString());
-                if (rainfall != null && rainfall.Any()) parameters.Add("rainfall", string.Join(",", rainfall));
+                if (rainfall != null) parameters.Add("rainfall", rainfall.ToString());
                 if (manualWashDates != null && manualWashDates.Any()) parameters.Add("manualWashDates", string.Join(",", manualWashDates));
                 if (format != null) parameters.Add("format", format.ToString());
 
@@ -462,7 +462,7 @@ public async Task<ApiResponse<ForecastsDataResponse>> GetForecastHsu(
             }
             catch (HttpRequestException httpEx)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "manualWashDates=" + manualWashDates + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm25=" + depoVelocPm25 + ", " + "pm10=" + pm10 + ", " + "pm25=" + pm25 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "manualWashDates=" + manualWashDates + ", " + "format=" + format;
                 var status = httpEx.StatusCode.HasValue ? ((int)httpEx.StatusCode).ToString() : "unknown";
                 var content = httpEx.Data.Contains("Content") ? httpEx.Data["Content"] : "no content";
                 throw new Exception($@"HTTP error in GetForecastHsu
@@ -473,7 +473,7 @@ public async Task<ApiResponse<ForecastsDataResponse>> GetForecastHsu(
             }
             catch (Exception ex)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "manualWashDates=" + manualWashDates + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm25=" + depoVelocPm25 + ", " + "pm10=" + pm10 + ", " + "pm25=" + pm25 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "manualWashDates=" + manualWashDates + ", " + "format=" + format;
                 throw new Exception($@"Unhandled error in GetForecastHsu
 Parameters: {paramDetails}
 Error: {ex.Message}", ex);
diff --git a/src/Solcast/Clients/HistoricClient.cs b/src/Solcast/Clients/HistoricClient.cs
index ada2ee6..88fc7f4 100644
--- a/src/Solcast/Clients/HistoricClient.cs
+++ b/src/Solcast/Clients/HistoricClient.cs
@@ -334,9 +334,9 @@ public async Task<ApiResponse<HistoricPvPowerResponse>> GetHistoricRooftopPvPowe
         /// <param name="timeZone">Timezone to return in data set. Accepted values are utc, longitudinal, or a range from -13 to 13 in 0.25 hour increments for utc offset. Default is utc.</param>
         /// <param name="period">Length of the averaging period in ISO 8601 format. Default is PT30M.</param>
         /// <param name="depoVelocPm10">Deposition or settling velocity of PM2.5 particulates. [m/s]. Default is 0.0009.</param>
-        /// <param name="depoVelocPm2_5">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
+        /// <param name="depoVelocPm2.5">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
         /// <param name="pm10">Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
-        /// <param name="pm2_5">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
+        /// <param name="pm2.5">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
         /// <param name="tilt">The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.</param>
         /// <param name="start">ISO_8601 compliant starting datetime for the historical data. If the supplied value does not specify a timezone, the timezone will be inferred from the time_zone parameter, if supplied. Otherwise UTC is assumed.</param>
         /// <param name="duration">Must include one of end_date and duration. ISO_8601 compliant duration for the historical data. Must be within 31 days of the start_date.</param>
@@ -354,9 +354,9 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetHistoricHsu(
             string timeZone = null,
             string period = null,
             double? depoVelocPm10 = null,
-            double? depoVelocPm2_5 = null,
+            double? depoVelocPm2.5 = null,
             List<double?> pm10 = null,
-            List<double?> pm2_5 = null,
+            List<double?> pm2.5 = null,
             double? tilt = null,
             string duration = null,
             string end = null,
@@ -377,9 +377,9 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetHistoricHsu(
                 if (timeZone != null) parameters.Add("timeZone", timeZone.ToString());
                 if (period != null) parameters.Add("period", period.ToString());
                 if (depoVelocPm10.HasValue) parameters.Add("depoVelocPm10", depoVelocPm10.Value.ToString());
-                if (depoVelocPm2_5.HasValue) parameters.Add("depoVelocPm2.5", depoVelocPm2_5.Value.ToString());
-                if (pm10 != null && pm10.Any()) parameters.Add("pm10", string.Join(",", pm10));
-                if (pm2_5 != null && pm2_5.Any()) parameters.Add("pm2.5", string.Join(",", pm2_5));
+                if (depoVelocPm2.5.HasValue) parameters.Add("depoVelocPm2.5", depoVelocPm2.5.Value.ToString());
+                if (pm10 != null) parameters.Add("pm10", pm10.ToString());
+                if (pm2.5 != null) parameters.Add("pm2.5", pm2.5.ToString());
                 if (tilt.HasValue) parameters.Add("tilt", tilt.Value.ToString());
                 if (duration != null) parameters.Add("duration", duration.ToString());
                 if (end != null) parameters.Add("end", end.ToString());
@@ -387,7 +387,7 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetHistoricHsu(
                 if (initialSoiling.HasValue) parameters.Add("initialSoiling", initialSoiling.Value.ToString());
                 if (manualWashDates != null && manualWashDates.Any()) parameters.Add("manualWashDates", string.Join(",", manualWashDates));
                 if (rainAccumPeriod.HasValue) parameters.Add("rainAccumPeriod", rainAccumPeriod.Value.ToString());
-                if (rainfall != null && rainfall.Any()) parameters.Add("rainfall", string.Join(",", rainfall));
+                if (rainfall != null) parameters.Add("rainfall", rainfall.ToString());
                 if (format != null) parameters.Add("format", format.ToString());
 
                 var queryString = string.Join("&", parameters.Select(p => $"{p.Key}={Uri.EscapeDataString(p.Value ?? string.Empty)}"));
@@ -422,7 +422,7 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetHistoricHsu(
             }
             catch (HttpRequestException httpEx)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "start=" + start + ", " + "timeZone=" + timeZone + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "duration=" + duration + ", " + "end=" + end + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "start=" + start + ", " + "timeZone=" + timeZone + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2.5=" + depoVelocPm2.5 + ", " + "pm10=" + pm10 + ", " + "pm2.5=" + pm2.5 + ", " + "tilt=" + tilt + ", " + "duration=" + duration + ", " + "end=" + end + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
                 var status = httpEx.StatusCode.HasValue ? ((int)httpEx.StatusCode).ToString() : "unknown";
                 var content = httpEx.Data.Contains("Content") ? httpEx.Data["Content"] : "no content";
                 throw new Exception($@"HTTP error in GetHistoricHsu
@@ -433,7 +433,7 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetHistoricHsu(
             }
             catch (Exception ex)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "start=" + start + ", " + "timeZone=" + timeZone + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "duration=" + duration + ", " + "end=" + end + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "start=" + start + ", " + "timeZone=" + timeZone + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2.5=" + depoVelocPm2.5 + ", " + "pm10=" + pm10 + ", " + "pm2.5=" + pm2.5 + ", " + "tilt=" + tilt + ", " + "duration=" + duration + ", " + "end=" + end + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
                 throw new Exception($@"Unhandled error in GetHistoricHsu
 Parameters: {paramDetails}
 Error: {ex.Message}", ex);
diff --git a/src/Solcast/Clients/LiveClient.cs b/src/Solcast/Clients/LiveClient.cs
index 5827cb7..59c6c0d 100644
--- a/src/Solcast/Clients/LiveClient.cs
+++ b/src/Solcast/Clients/LiveClient.cs
@@ -381,9 +381,9 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetLiveRadiationAnd
         /// <param name="hours">The number of hours to return in the response. Default is 24.</param>
         /// <param name="period">Length of the averaging period in ISO 8601 format. Default is PT30M.</param>
         /// <param name="depoVelocPm10">Deposition or settling velocity of PM2.5 particulates. [m/s]. Default is 0.0009.</param>
-        /// <param name="depoVelocPm2_5">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
+        /// <param name="depoVelocPm2.5">Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.</param>
         /// <param name="pm10">Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
-        /// <param name="pm2_5">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
+        /// <param name="pm2.5">Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.</param>
         /// <param name="tilt">The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.</param>
         /// <param name="cleaningThreshold">Amount of daily rainfall required to clean the panels (mm). Default is 6.0.</param>
         /// <param name="initialSoiling">Initial percentage of energy lost due to soiling at time zero in the rainfall series input. If not provided, Solcast will perform a ramp up series calculation to accurately determine this value. If provided must be >= 0 and < 0.3437.</param>
@@ -398,9 +398,9 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetLiveHsu(
             int? hours = null,
             string period = null,
             double? depoVelocPm10 = null,
-            double? depoVelocPm2_5 = null,
+            double? depoVelocPm2.5 = null,
             List<double?> pm10 = null,
-            List<double?> pm2_5 = null,
+            List<double?> pm2.5 = null,
             double? tilt = null,
             double? cleaningThreshold = null,
             double? initialSoiling = null,
@@ -419,15 +419,15 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetLiveHsu(
                 if (hours.HasValue) parameters.Add("hours", hours.Value.ToString());
                 if (period != null) parameters.Add("period", period.ToString());
                 if (depoVelocPm10.HasValue) parameters.Add("depoVelocPm10", depoVelocPm10.Value.ToString());
-                if (depoVelocPm2_5.HasValue) parameters.Add("depoVelocPm2.5", depoVelocPm2_5.Value.ToString());
-                if (pm10 != null && pm10.Any()) parameters.Add("pm10", string.Join(",", pm10));
-                if (pm2_5 != null && pm2_5.Any()) parameters.Add("pm2.5", string.Join(",", pm2_5));
+                if (depoVelocPm2.5.HasValue) parameters.Add("depoVelocPm2.5", depoVelocPm2.5.Value.ToString());
+                if (pm10 != null) parameters.Add("pm10", pm10.ToString());
+                if (pm2.5 != null) parameters.Add("pm2.5", pm2.5.ToString());
                 if (tilt.HasValue) parameters.Add("tilt", tilt.Value.ToString());
                 if (cleaningThreshold.HasValue) parameters.Add("cleaningThreshold", cleaningThreshold.Value.ToString());
                 if (initialSoiling.HasValue) parameters.Add("initialSoiling", initialSoiling.Value.ToString());
                 if (manualWashDates != null && manualWashDates.Any()) parameters.Add("manualWashDates", string.Join(",", manualWashDates));
                 if (rainAccumPeriod.HasValue) parameters.Add("rainAccumPeriod", rainAccumPeriod.Value.ToString());
-                if (rainfall != null && rainfall.Any()) parameters.Add("rainfall", string.Join(",", rainfall));
+                if (rainfall != null) parameters.Add("rainfall", rainfall.ToString());
                 if (format != null) parameters.Add("format", format.ToString());
 
                 var queryString = string.Join("&", parameters.Select(p => $"{p.Key}={Uri.EscapeDataString(p.Value ?? string.Empty)}"));
@@ -462,7 +462,7 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetLiveHsu(
             }
             catch (HttpRequestException httpEx)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2.5=" + depoVelocPm2.5 + ", " + "pm10=" + pm10 + ", " + "pm2.5=" + pm2.5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
                 var status = httpEx.StatusCode.HasValue ? ((int)httpEx.StatusCode).ToString() : "unknown";
                 var content = httpEx.Data.Contains("Content") ? httpEx.Data["Content"] : "no content";
                 throw new Exception($@"HTTP error in GetLiveHsu
@@ -473,7 +473,7 @@ public async Task<ApiResponse<EstimatedActualsDataResponse>> GetLiveHsu(
             }
             catch (Exception ex)
             {
-                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2_5=" + depoVelocPm2_5 + ", " + "pm10=" + pm10 + ", " + "pm2_5=" + pm2_5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
+                var paramDetails = "latitude=" + latitude + ", " + "longitude=" + longitude + ", " + "timeZone=" + timeZone + ", " + "hours=" + hours + ", " + "period=" + period + ", " + "depoVelocPm10=" + depoVelocPm10 + ", " + "depoVelocPm2.5=" + depoVelocPm2.5 + ", " + "pm10=" + pm10 + ", " + "pm2.5=" + pm2.5 + ", " + "tilt=" + tilt + ", " + "cleaningThreshold=" + cleaningThreshold + ", " + "initialSoiling=" + initialSoiling + ", " + "manualWashDates=" + manualWashDates + ", " + "rainAccumPeriod=" + rainAccumPeriod + ", " + "rainfall=" + rainfall + ", " + "format=" + format;
                 throw new Exception($@"Unhandled error in GetLiveHsu
 Parameters: {paramDetails}
 Error: {ex.Message}", ex);
diff --git a/src/Solcast/Models/Responses/GetForecastHsuLosses.cs b/src/Solcast/Models/Responses/GetForecastHsuLosses.cs
index 2590276..8252c1a 100644
--- a/src/Solcast/Models/Responses/GetForecastHsuLosses.cs
+++ b/src/Solcast/Models/Responses/GetForecastHsuLosses.cs
@@ -45,7 +45,7 @@ public class GetForecastHsuLosses
         /// Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.
         /// </summary>
         [JsonProperty("depo_veloc_pm2_5")]
-        public double? DepoVelocPm2_5 { get; set; }
+        public double? DepoVelocPm25 { get; set; }
 
         /// <summary>
         /// Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
@@ -57,7 +57,7 @@ public class GetForecastHsuLosses
         /// Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
         /// </summary>
         [JsonProperty("pm2_5")]
-        public List<double?> Pm2_5 { get; set; }
+        public List<double?> Pm25 { get; set; }
 
         /// <summary>
         /// The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.
diff --git a/src/Solcast/Models/Responses/GetHistoricHsuLosses.cs b/src/Solcast/Models/Responses/GetHistoricHsuLosses.cs
index 042c0a2..058580c 100644
--- a/src/Solcast/Models/Responses/GetHistoricHsuLosses.cs
+++ b/src/Solcast/Models/Responses/GetHistoricHsuLosses.cs
@@ -39,7 +39,7 @@ public class GetHistoricHsuLosses
         /// Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.
         /// </summary>
         [JsonProperty("depo_veloc_pm2.5")]
-        public double? DepoVelocPm2_5 { get; set; }
+        public double? DepoVelocPm2.5 { get; set; }
 
         /// <summary>
         /// Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
@@ -51,7 +51,7 @@ public class GetHistoricHsuLosses
         /// Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
         /// </summary>
         [JsonProperty("pm2.5")]
-        public List<double?> Pm2_5 { get; set; }
+        public List<double?> Pm2.5 { get; set; }
 
         /// <summary>
         /// The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.
diff --git a/src/Solcast/Models/Responses/GetLiveHsuLosses.cs b/src/Solcast/Models/Responses/GetLiveHsuLosses.cs
index 14ec3f8..f653126 100644
--- a/src/Solcast/Models/Responses/GetLiveHsuLosses.cs
+++ b/src/Solcast/Models/Responses/GetLiveHsuLosses.cs
@@ -45,7 +45,7 @@ public class GetLiveHsuLosses
         /// Deposition or settling velocity of PM10 particulates. [m/s]. Default is 0.004.
         /// </summary>
         [JsonProperty("depo_veloc_pm2.5")]
-        public double? DepoVelocPm2_5 { get; set; }
+        public double? DepoVelocPm2.5 { get; set; }
 
         /// <summary>
         /// Restricted. A list of PM10 values. Concentration of airborne particulate matter (PM) with aerodynamicdiameter less than 10 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
@@ -57,7 +57,7 @@ public class GetLiveHsuLosses
         /// Restricted. Concentration of airborne particulate matter (PM) with aerodynamic diameter less than 2.5 microns. [g/m^3]. HSU endpoint will internally use Solcast's PM2.5 values tailored to your request time period.
         /// </summary>
         [JsonProperty("pm2.5")]
-        public List<double?> Pm2_5 { get; set; }
+        public List<double?> Pm2.5 { get; set; }
 
         /// <summary>
         /// The angle (degrees) that the PV system is tilted off the horizontal. A tilt of 0 means the system faces directly upwards, and 90 means the system is vertical and facing the horizon. If you don't specify tilt, we use a default tilt angle based on the latitude you specify in your request. Must be between 0 and 90.