I am trying to look at multiple years of precipitation data at once for use with pvlib.soiling.kimber. The tmy3 import works just fine for one year of data but if I add additional 8760 data below it doesn’t work, example error:

“ValueError: cannot convert float NaN to integer”

I’ve tried copying the same formatting for the date, time, and data but still am getting the above error. Can read_tmy3 work with multiple years of data? If not, what’s the best way to accomplish this? I want to run the kimber on 20 years of hourly precipitation data.

Thank you

I tried to ensure the formatting of the additional rows was identical to the rows above, even copy pasting the original again, for example.