condition mean min max 0 h after light 0.0191812 0.0 0.0383624 4 h after light 0.01893705 0.0 0.0378741 8 h after light 0.0201198 0.0 0.0402396 4 h after dark 0.01898515 0.0 0.0379703 8 h after dark 0.0 0.0 0.0 12 h after dark 0.01938565 0.0 0.0387713