condition mean min max 0 h after light 11.78415 10.8448 12.7235 4 h after light 19.927500000000002 18.1281 21.7269 8 h after light 19.27385 18.9926 19.5551 4 h after dark 20.77065 20.0924 21.4489 8 h after dark 14.8941 14.8668 14.9214 12 h after dark 14.21965 13.1374 15.3019