condition mean min max 4 h after light 0.01930565 0.0 0.0386113 8 h after light 0.01564145 0.0 0.0312829 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.00836735 0.0 0.0167347 12 h after dark 0.0 0.0 0.0