Hot Day
The Hot Day certificate pays out a pre-defined amount for every day the daily average temperature is above your specified level.

Heat Day 
The Heat Day certificate pays out a pre-defined amount for every day the daily maximum temperature is above your specified level.

CAT Call
The Cumulative Average Temperature certificate pays a pre-defined amount for every degree Celsius if the cumulative average temperature during a particular period is above a specified level.

HDD Put
The Heating Degree Day certificate pays a pre-defined amount for every Heating Degree Day (HDD) if the sum of the daily HDD's during a particular period is below a specified level.