condition mean min max 4 h after light 1198.4 1198.4 1198.4 8 h after light 1106.6 1058.6 1154.6 12 h after light 1212.1999999999998 1124.3 1300.1 4 h after dark 1256.6 1186.7 1326.5 8 h after dark 1471.05 1319.6 1622.5 12 h after dark 1528.9 1410.0 1647.8