I have a automated weather station and I'm collecting data from it. And I was wondering about something. I calculate average daily temperature like this: (T07+T14+2*T21)/4 . During the summer I am calculating it like this (T08+T15+2*T22 )/4 . That's taking into consideration daylight saving time which puts the clock one hour forward. Is that the correct way to do it during the summer?