condition mean min max 4 h after light 3.19551 3.11394 3.27708 8 h after light 2.759785 2.14065 3.37892 12 h after light 4.46836 3.73488 5.20184 4 h after dark 7.43068 6.29214 8.56922 8 h after dark 5.107105000000001 4.45786 5.75635 12 h after dark 5.515525 4.59007 6.44098