condition mean min max 4 h after light 983.4 983.4 983.4 8 h after light 1051.2 1045.0 1057.4 12 h after light 1202.5500000000002 1123.9 1281.2 4 h after dark 1539.3000000000002 1468.2 1610.4 8 h after dark 1289.2 945.0 1633.4 12 h after dark 897.95 651.0 1144.9