| Index | Descriptive Name | Definition | Units |
| DTR | Diurnal temperature range | DTR Diurnal temperature range Monthly mean difference between TX and TN | ˚C |
| TXx | Hottest day | Monthly highest TX | ˚C |
| TNx | Hottest night | Monthly highest TN | ˚C |
| TXn | Coolest day | Monthly lowest TX | ˚C |
| TNn | Coolest night | Monthly lowest TN | ˚C |
| TN10p | Cool night frequency | Percentage of days when TN < 10th percentile | % |
| TX10p | Cool day frequency | Percentage of days when TX < 10th percentile | % |
| TN90p | Hot night frequency | Percentage of days when TN > 90th percentile | % |
| TX90p | Hot day frequency | Percentage of days when TX > 90th percentile | % |