condition mean min max 4 h after light 1330.2 1330.2 1330.2 8 h after light 1434.3 1304.1 1564.5 12 h after light 1344.65 1148.8 1540.5 4 h after dark 1057.0 1045.9 1068.1 8 h after dark 1170.9 1129.0 1212.8 12 h after dark 1209.0 1204.8 1213.2