Standart deviation issue and file name naming.

For the first part of the question, my standart deviation is only appearing on the positive side, because the standart deviation is mirrored can i assume that the values represent the positive and negative but appear as one?

For the seconde part of the question, my files present this name 'GRD-3_2002094-2002120_GRAC_JPLEM_BA01_0600_LND_v04', a wanna name them after this set part of the filename '2002094-2002120' how can i do it?

[the cyclist]

If you have two unrelated questions, it is better to ask them in different posts.

Also, I don't understand what you mean by "appearing on the positive side". Are you talking about a graph? The calculated standard deviation is always positive.

[Vasco]

Thats what I thought about the std but my coordinator was confused about it

Thank you a lot.

I already resolved it thank you