Hi, I have a dataset like this:
RecTime NO2_RAW NO2 LAQN_NO2 10980 06/6/19 01:45 17.95444444 53.46255556 17.7 10981 06/6/19 01:45 17.94444444 53.44344444 17.7 10982 06/6/19 01:45 17.92111111 53.39877778 17.7 I want to calculate the difference between LAQN_NO2 and NO2_RAW everyday at 04:00 and add that value to NO2_RAW values in all rows on a particular day. I have 2 months of data and I want to do this for each day. So, I want a table like this RecTime NO2_RAW NO2 LAQN_NO2 NO2_Cal 10980 06/6/19 01:45 17.95444444 53.46255556 17.7 (LAQN_NO2-NO2_RAW)+NO2_RAW 10981 06/6/19 01:45 17.94444444 53.44344444 17.7 10982 06/6/19 01:45 17.92111111 53.39877778 17.7 Can someone please help? Thanks Debasree -- https://mail.python.org/mailman/listinfo/python-list
