condition mean min max 4 h after light 0.0327328 0.0 0.0654656 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 0.0 0.0 0.0 12 h after dark 0.0235188 0.0 0.0470376