condition mean min max 4 h after light 0.0116308 0.0 0.0232616 8 h after light 0.01561725 0.0 0.0312345 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0