condition mean min max 4 h after light 0.828829 0.457878 1.19978 8 h after light 1.52419 1.34593 1.70245 12 h after light 1.89815 1.69589 2.10041 4 h after dark 1.926645 1.53851 2.31478 8 h after dark 2.3104899999999997 2.14098 2.48 12 h after dark 1.371955 1.32623 1.41768