condition mean min max 4 h after light 850.0838889 814.515 873.68 8 h after light 800.1800000000001 716.83 920.8566667 12 h after light 647.9388888666666 583.4333333 697.0933333 1.5 h after dark 695.5955555666667 626.9466667 757.78 5.5 h after dark 860.3288889 748.85 966.99 9.5 h after dark 901.1677777666666 816.1066667 973.3733333