condition mean min max 4 h after light 7.760540000000001 6.28761 9.23347 8 h after light 12.3515 11.8995 12.8035 12 h after light 8.20227 6.65371 9.75083 4 h after dark 9.79093 8.46436 11.1175 8 h after dark 4.78672 4.5512 5.02224 12 h after dark 7.44395 6.95273 7.93517