| .add_variables | Add Columns to Handle Summarize |
| .api_error | Handles API Errors |
| .check_flags | Check Flags Columns |
| .daily_request | Request Daily Summaries |
| .daily_url | Create Request URL for Daily Summaries |
| .drop_flags | Drop Flags Columns |
| .elevation_url | The GHCNd Station URL with Elevation |
| .extract_flag | Extract GHCNd Flags |
| .flags | GHCNd Flags |
| .inventory_url | The GHCNd Inventory URL |
| .max | Calculate Maximum |
| .mean | Calculate Mean |
| .min | Calculate Minimum |
| .missing_variables | Check Which Variables Are Absent |
| .s3_annual | Annual Class Constructor |
| .s3_anomaly | Anomaly Constructor |
| .s3_daily | Daily Class Constructor |
| .s3_monthly | Monthly Class Constructor |
| .s3_quarterly | Annual Quarter Constructor |
| .sum | Calculate Sum |
| annual | Calculate Annual Timseries |
| annual_coverage | Calculate Annual Coverage |
| anomaly | Temperature Anomaly |
| as_daily | Cast Table to Daily |
| CA003076680 | Daily data for Station CA003076680 |
| country_codes | Countries ISO Codes |
| coverage | Calculate Coverage of Daily Summaries |
| daily | Download Daily Summaries |
| download_inventory | Download GHCNd Inventory File |
| elevation_stations | Get GHCNd Station Elevation |
| filter_stations | Spatial Filtering of Stations |
| get_countries | Download multiple countries' shapefiles from geoBoundaries |
| get_country | Download country shapefile from geoBoundaries |
| monthly | Calculate Monthly Summaries |
| monthly_coverage | Calculate Monthly Coverage |
| period_coverage | Calculate Period Coverage |
| plot.ghcn_annual | Plot GHCNd Timeseries |
| plot.ghcn_anomaly | Plot GHCN Timeseries |
| plot.ghcn_daily | Plot GHCNd Timeseries |
| plot.ghcn_monthly | Plot GHCNd Timeseries |
| plot.ghcn_quarterly | Plot GHCNd Timeseries |
| quarterly | Calculate Quarterly Timseries |
| remove_flagged | Remove Flagged Recrods |
| stations | Get GHCNd Inventory |
| USC00010655 | Daily data for Station USC00010655 |