condition mean min max 4 h after light 0.0132726 0.0 0.0265452 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 0.0193686 0.0 0.0346148