Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
2017,,,,,,476,447,472,425,401,361,303,,
2018,272,291,336,376,441,460,460,397,418,415,359,293,376,
2019,282,251,317,382,440,473,446,444,421,404,361,310,377,
2020,275,303,310,243,362,441,428,421,442,403,363,348,362,
2021,283,287,369,439,476,491,470,441,426,407,393,321,400,
2022,253,319,341,367,430,438,400,400,412,392,321,264,361,
2023,257,291,286,354,460,433,379,411,399,383,346,302,358,
2024, ,284,315, , , , , , , , , , ,