condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.01154265 0.0 0.0230853 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