Before table normalization (removing extra station data):
202201 - 192_826 KB
202202 - 226_747 KB
202203 - 348_291 KB
After table normalization:
202201 - 96_907 KB (50.25% of original)
202202 - 113_699 KB (50.14% of original)
202203 - 174_415 KB (50.07% of original)
Size of station_data.csv: 91 KB