condition mean min max 4 h after light 1443.40764 1301.826372 1584.988908 8 h after light 1024.557648 1019.498624 1029.616672 12 h after light 931.2475365 815.384145 1047.110928 4 h after dark 868.263649 668.057417 1068.469881 8 h after dark 897.2897654999999 509.616672 1284.962859 12 h after dark 770.500104 770.500104 770.500104