condition mean min max 4 h after light 1457.5 1457.5 1457.5 8 h after light 1385.0500000000002 1295.2 1474.9 12 h after light 1046.05 906.0 1186.1 4 h after dark 1163.95 835.0 1492.9 8 h after dark 1232.6 1187.2 1278.0 12 h after dark 1416.7 1381.4 1452.0