condition mean min max 4 h after light 69.67445 61.6029 77.746 8 h after light 32.1314 30.53 33.7328 12 h after light 32.356 29.7263 34.9857 4 h after dark 37.54646666666667 36.769 38.4901 8 h after dark 53.394466666666666 49.5267 59.4499 12 h after dark 73.7725 73.7054 73.8417