condition mean min max 4 h after light 1549.6 1549.6 1549.6 8 h after light 1507.4 1450.7 1564.1 12 h after light 1615.35 1486.0 1744.7 4 h after dark 1583.7 1580.4 1587.0 8 h after dark 1209.15 1021.9 1396.4 12 h after dark 1020.8499999999999 995.9 1045.8