How to neglect Nan values

HARP
1

Hello,
I used the qa_flag>0.5 for SO2 values and I got some missing spots in the plot.
My question is: How can I neglect these Nan values so that the function gives me the mean value of a Box without counting the NAN values.
Thank you in advance,
Ismail

2

It looks like you already asked this question here. How is this question different?

3

Yes sorry. You answered that correctly in the last question. I just wanted to make the question detailed here.