condition mean min max 4 h after light 7.636561666666667 3.943429 12.22817 8 h after light 7.675962333333333 2.8269509999999998 15.97543 12 h after light 6.143281333333333 3.6824339999999998 7.843475 16 h after light 7.44579 6.807633 7.985498 4 h after dark 7.435477000000001 6.576191000000001 8.020455 8 h after dark 8.176863 6.684353999999999 11.0486