condition mean min max 4 h after light 556.9 556.9 556.9 8 h after light 1347.7 595.0 2100.4 12 h after light 1155.3 65.1 2245.5 4 h after dark 300.8 55.5 546.1 8 h after dark 474.75 437.2 512.3 12 h after dark 559.45 540.3 578.6