condition mean min max 0 h after light 13.27935 12.2837 14.275 4 h after light 8.153335 7.64553 8.66114 8 h after light 9.481185 7.91757 11.0448 4 h after dark 12.5153 11.8196 13.211 8 h after dark 11.3491 11.0851 11.6131 12 h after dark 10.185110000000002 8.58172 11.7885