condition mean min max 0 h after light 16.6491 16.4481 16.8501 4 h after light 15.783249999999999 15.565 16.0015 8 h after light 15.259 15.1446 15.3734 4 h after dark 14.5177 13.1434 15.892 8 h after dark 15.8799 15.6702 16.0896 12 h after dark 17.50085 15.7453 19.2564