condition mean min max 4 h after light 7.628166666666666 4.64932 11.5491 8 h after light 4.47924 1.86385 7.28951 12 h after light 4.821716666666666 2.3735 7.38188 4 h after dark 6.7218599999999995 5.52583 7.82081 8 h after dark 6.38769 3.61343 9.74317 12 h after dark 4.011876666666667 2.49304 7.02357