condition mean min max 4 h after light 1.1346713333333334 0.451384 1.87777 8 h after light 2.4427426666666667 0.733478 4.35777 12 h after light 3.1308166666666666 1.8394 4.44737 4 h after dark 2.4501600000000003 2.10923 2.73871 8 h after dark 1.51199 1.24103 1.78926 12 h after dark 1.196776 0.759538 1.61047