Aggregating daily data in set analysis on graphs

[aworrall]

HI

I have some daily data that I would like to average.  I would like to average a yield for a given month.  Yield being production inputs / production outputs.

I would like the average to only take into account days when there are values, not blanks.

Many thanks for anyone that can help

[vishsaggi]

Can you share a sample file you are trying this?