condition mean min max 4 h after light 9.935894999999999 9.55749 10.3143 8 h after light 8.812235 8.77883 8.84564 12 h after light 8.357535 8.07238 8.64269 4 h after dark 10.5814 10.2488 10.9645 8 h after dark 9.52364 8.85559 10.6809 12 h after dark 9.110446666666666 8.70856 9.41915