> ## Documentation Index > Fetch the complete documentation index at: https://docs.plantpredict.com/llms.txt > Use this file to discover all available pages before exploring further. # Weather File > Complete reference for all parameters and data within a PlantPredict weather file A PlantPredict weather file contains time-series meteorological data required for energy predictions. Weather files are organized across three tabs for viewing summary statistics, interactive charts, and raw data. ## Tab Overview | Tab | Description | | ------------ | ---------------------------------------------------------------------- | | **Summary** | Annual totals, averages, station metadata, and data source information | | **Charts** | Interactive time-series visualization of weather variables | | **Raw Data** | Complete time-series data table with all weather parameters | ### Header Actions | Action | Description | | ----------------- | ------------------------------------------ | | **Save Weather** | Save changes to the weather file | | **Map** | View the weather station location on a map | | **Change Status** | Change the weather file status | | **Quality Check** | Run data quality validation checks | | **Export** | Export the weather file | | **Delete** | Delete the weather file | *** ## Summary Tab The Summary tab displays aggregated statistics and metadata for the weather file. Weather File Summary ### Totals Annual irradiance totals calculated from the time-series data. | Parameter | Units | Description | | --------------------------- | ------ | -------------------------------------------------------------- | | **Global Horizontal** | kWh/m² | Total Global Horizontal Irradiance (GHI) | | **Diffuse Horizontal** | kWh/m² | Total Diffuse Horizontal Irradiance (DHI) | | **Direct Normal** | kWh/m² | Total Direct Normal Irradiance (DNI) | | **Plane of Array** | kWh/m² | Total Plane of Array Irradiance (if available) | | **Backside Plane of Array** | kWh/m² | Total rear-side irradiance for bifacial systems (if available) | | **Albedo** | — | Average ground reflectance (if available) | ### Averages Annual average values for meteorological parameters. | Parameter | Units | Description | | ----------------------- | ---------- | ---------------------------------------- | | **Air Temperature** | °C / °F | Average ambient air temperature | | **Relative Humidity** | % | Average relative humidity | | **Wind Speed** | m/s / ft/s | Average wind speed | | **Precipitable Water** | cm / in | Average precipitable water in atmosphere | | **Max Air Temperature** | °C / °F | Maximum recorded air temperature | | **Soiling** | % | Average soiling loss (if available) | | **Albedo** | — | Average ground albedo (if available) | ### Weather Station Location and metadata for the weather data source. | Parameter | Units | Description | | ------------------ | ------ | ------------------------------------------ | | **Latitude** | ° | Station latitude (positive = North) | | **Longitude** | ° | Station longitude (positive = East) | | **Elevation** | m / ft | Station elevation above sea level | | **Time Zone** | hr | UTC offset for timestamps | | **Time Step** | min | Data interval (e.g., 60 = hourly) | | **Locality** | — | City or locality name | | **State/Province** | — | State or province | | **Country** | — | Country | | **Region** | — | Geographic region | | **Station Code** | — | Weather station identifier (if applicable) | ### Data Specifics Information about the data source and file properties. | Parameter | Units | Description | | ------------------------ | ----- | ------------------------------------------------------------- | | **Provider** | — | Weather data provider (e.g., Meteonorm, SolarAnywhere, NSRDB) | | **Type** | — | Data type (Measured, Satellite-derived, TMY, etc.) | | **Project/Station Name** | — | Name or identifier for the project or station | | **Start Date** | — | First timestamp in the data | | **End Date** | — | Last timestamp in the data | | **P-Level** | — | Probability level (e.g., P50, P90, P95) | | **Model Version** | — | Provider model version (if applicable) | | **Import File Name** | — | Original filename when imported | *** ## Charts Tab The Charts tab provides interactive visualization of weather data time-series. Weather File Charts ### Display Options | Element | Description | | ------------------------ | ---------------------------------------------------- | | **Graph / Table** | Toggle between graphical chart and tabular data view | | **Date Range Slider** | Adjust the displayed time range within the dataset | | **Slider Display Range** | Select time scale: Day, Month, or Year | ### Increment Select the data aggregation level for display: | Option | Description | | ----------- | ------------------------------------ | | **Hourly** | Display hourly data points | | **Daily** | Aggregate and display daily values | | **Monthly** | Aggregate and display monthly values | ### Variables to Display **Measured Variables:** | Variable | Units | Description | | ----------------------- | ---------- | ----------------------------------- | | **GHI** | W/m² | Global Horizontal Irradiance | | **DHI** | W/m² | Diffuse Horizontal Irradiance | | **DNI** | W/m² | Direct Normal Irradiance | | **Horizontal Beam** | W/m² | Horizontal beam irradiance | | **Backside POAI** | W/m² | Rear-side Plane of Array Irradiance | | **Ambient Temperature** | °C / °F | Ambient air temperature | | **Relative Humidity** | % | Relative humidity | | **Wind Velocity** | m/s / ft/s | Wind speed | | **Soiling Loss** | % | Soiling loss factor | | **POAI** | W/m² | Plane of Array Irradiance | **Calculated Variables:** | Variable | Units | Description | | -------------------- | ----- | -------------------------------------------------- | | **Clear Sky Model** | W/m² | Calculated clear sky irradiance for comparison | | **POAI (Clear Sky)** | W/m² | Clear sky Plane of Array Irradiance | | **POAI from GHI** | W/m² | POA calculated from GHI using transposition models | Use the **Clear Sky Model** overlay to identify potential data quality issues such as time shifts, sensor errors, or cloud enhancement events. Measured values significantly exceeding clear sky suggest data anomalies. *** ## Raw Data Tab The Raw Data tab displays the complete time-series data in tabular format. Weather File Raw Data ### Data Columns | Column | Units | Description | | ----------------- | ---------- | ----------------------------------- | | **Index** | — | Row number | | **Timestamp** | — | Date and time (ISO 8601 format) | | **GHI** | W/m² | Global Horizontal Irradiance | | **DHI** | W/m² | Diffuse Horizontal Irradiance | | **DNI** | W/m² | Direct Normal Irradiance | | **POAI** | kW/m² | Plane of Array Irradiance | | **Backside POAI** | kW/m² | Rear-side Plane of Array Irradiance | | **Temp** | °C / °F | Ambient temperature | | **Rel Hmdty** | % | Relative humidity | | **Prec. Water** | cm / in | Precipitable water | | **Dewpoint** | °C / °F | Dewpoint temperature | | **Pressure** | mbars | Atmospheric pressure | | **Wind Speed** | m/s / ft/s | Wind speed | | **Wind Dir.** | ° | Wind direction | | **Wind Gust** | m/s / ft/s | Maximum wind gust | | **Rainfall** | mm / in | Precipitation | | **Soiling Loss** | % | Soiling loss factor | | **Albedo** | — | Ground reflectance | Not all columns will contain data for every weather file. Available parameters depend on the data source and provider. Columns without data will display as empty or with placeholder values. *** ## Data Quality Considerations When reviewing weather files, consider the following: | Check | Description | | --------------------- | ------------------------------------------------------------- | | **GHI vs Clear Sky** | GHI should not consistently exceed clear sky values | | **DHI + DNI ≈ GHI** | Component irradiances should sum approximately to GHI | | **Time Alignment** | Irradiance peaks should align with solar noon | | **Temperature Range** | Temperatures should be reasonable for the location and season | | **Missing Data** | Check for gaps or extended periods of zero values | Use the **Quality Check** button in the header to run automated data validation checks on the weather file.