condition mean min max 4 h after light 4.023905 3.34805 4.69976 8 h after light 3.065035 2.61523 3.51484 12 h after light 2.97368 2.84705 3.10031 4 h after dark 5.55625 4.54641 6.56609 8 h after dark 4.89071 4.2451 5.53632 12 h after dark 4.914255 4.0695 5.75901