condition mean min max 0 h after light 11.63795 10.5365 12.7394 4 h after light 13.45435 13.0955 13.8132 8 h after light 15.98935 15.0064 16.9723 4 h after dark 21.8134 18.6091 25.0177 8 h after dark 16.2138 13.7982 18.6294 12 h after dark 14.4636 14.2226 14.7046