condition mean min max 4 h after light 1181.3 1181.3 1181.3 8 h after light 1339.65 1278.9 1400.4 12 h after light 1225.0 1171.6 1278.4 4 h after dark 1394.8 1341.0 1448.6 8 h after dark 1299.6 1223.9 1375.3 12 h after dark 1013.45 985.6 1041.3