How many days in a month?

[HeinrichH]

As one of my graph definitions I use the extreme set. When I calculate the number of days there are 46 days in May.
What's the problem??

[wfpost]

some of the ranges you selected are subsets of each other
Tmax:
Tmax >30 is a strict subset of Tmax > 0
Tmax >0 is no subset of Tmax > 30

6 days over 30°C in May in the Netherlands? Impossible! ;)

[HeinrichH]

Quote:
6 days over 30°C in May in the Netherlands? Impossible!
Unquote.

This station is located at my house in Portugal, day temperature is between 25 and 35 °C those days :-) In the middays we need the pool to cool down

[wfpost]

Quote:
6 days over 30°C in May in the Netherlands? Impossible!
Unquote.

This station is located at my house in Portugal, day temperature is between 25 and 35 °C those days :-) In the middays we need the pool to cool down

I see, never try to conclude from the language to the location ;)

BTW: You´re right, I looked again at your graph and the selected extremes should be not subsets of each other.
Maybe something with the temp ranges isn´t correct, so that some days fall into more than one subset.

[wfpost]

with my data it seems to work:
sum for May: 31 days

[HeinrichH]

You're right, never gues a location of the language :-)

I've found the problem, the definition for the temps between 10 and 15°C where wrong, now it's correct, see attached graph (Yes, I'm missing some days in May, electrical problems on the country site of Portugal)