condition mean min max 4 h after light 15.133961 15.133961 15.133961 8 h after light 13.4285185 11.482446 15.374591 12 h after light 13.1574425 12.903384 13.411501 4 h after dark 15.366882 14.129556 16.604208 8 h after dark 16.209399 15.664027 16.754771 12 h after dark 15.133961 15.133961 15.133961