condition mean min max 4 h after light 553.7 553.7 553.7 8 h after light 623.95 522.9 725.0 12 h after light 926.5 607.7 1245.3 4 h after dark 1389.0 1325.5 1452.5 8 h after dark 1395.6999999999998 1070.1 1721.3 12 h after dark 1377.0 1327.6 1426.4