Answer by the manufacturer:
Dear Sirs,
Temperature compensation means that the desired charging voltage (14.4V or 14.7V) is adapted to the prevailing environment in the temperature.
Program cars / Normal: charge voltage 14.4V at temperatures of 5 ° C and more
AGM program (formerly "Snowflake"): charge voltage 14.7V for temperatures below 5 ° C and for AGM and EFB batteries.