condition mean min max 0 h after light 1.80847 1.76838 1.84856 4 h after light 2.615845 2.37635 2.85534 8 h after light 4.9483250000000005 4.79175 5.1049 4 h after dark 4.2283 3.69791 4.75869 8 h after dark 3.930435 3.36796 4.49291 12 h after dark 2.95595 2.44522 3.46668