condition mean min max 4 h after light 0.0156572 0.0 0.0313144 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.01355765 0.0 0.0271153 12 h after dark 0.0 0.0 0.0