condition mean min max 4 h after light 1070.6930305 868.665389 1272.720672 8 h after light 825.093496 717.388099 932.798893 12 h after light 1026.5577405 1018.096937 1035.018544 4 h after dark 523.6672665 439.504347 607.830186 8 h after dark 465.47202 270.30898 660.63506 12 h after dark 1243.999697 1243.999697 1243.999697