Climate Variables
| acronym | abbreviation | variable | units |
| cld | cloud | cloud cover | percentage |
| dtr | T range | diurnal temperature range | degrees Celsius |
| frs | frost | frost day frequency | days |
| tmn | T min | daily minimum temperature | degrees Celsius |
| tmp | T mean | daily mean temperature | degrees Celsius |
| tmx | T max | daily maximum temperature | degrees Celsius |
| pre | precip | precipitation total | millimetres |
| vap | vapour | vapour pressure | hecta-Pascals |
| wet | wetdays | wet day frequency | days |
Time scales
The values supplied are at time scales of a month or longer. Day-to-day variations are not supplied. The temperature values are the monthly (or seasonal, or annual) means of the daily statistics; for example, the daily minimum temperature for January is the monthly mean of the 31 minimum temperatures during January.
Temperature variables
The temperature variables are related as follows: the diurnal temperature range is the difference between the daily minimum and maximum temperatures; the daily 'mean' temperature is the mid-point (median) between the daily minimum and maximum temperatures.
Frequency variables
The frost frequency is the number of days in a month in which daily minimum temperature dropped below zero degrees Celsius. The wet day frequency is the number of days in a month in which precipitation occurs.