condition mean min max 4 h after light 1469.4 1469.4 1469.4 8 h after light 1283.35 1068.4 1498.3 12 h after light 1354.1 1244.4 1463.8 4 h after dark 1316.65 1312.7 1320.6 8 h after dark 1272.6 1014.4 1530.8 12 h after dark 1625.15 1500.1 1750.2