condition mean min max 0 h after light 12.4389 11.4515 13.4263 4 h after light 13.623850000000001 13.1197 14.128 8 h after light 17.9762 16.9392 19.0132 4 h after dark 20.9372 19.6674 22.207 8 h after dark 19.3631 19.2639 19.4623 12 h after dark 14.579450000000001 13.8878 15.2711