condition mean min max 0 h after light 8.07889 7.69419 8.46359 4 h after light 9.522755 9.37702 9.66849 8 h after light 9.868585 9.21437 10.5228 4 h after dark 12.35975 12.224 12.4955 8 h after dark 7.90817 7.87499 7.94135 12 h after dark 8.487739999999999 7.98518 8.9903