condition mean min max 4 h after light 347.696 324.392 371.0 8 h after light 244.5255 244.07 244.981 12 h after light 121.0505 120.541 121.56 4 h after dark 42.08405 41.6829 42.4852 8 h after dark 47.7146 46.9312 48.498 12 h after dark 92.4151 92.3102 92.52