condition mean min max 4 h after light 0.02971385 0.0144457 0.044982 8 h after light 0.0091788 0.0 0.0183576 12 h after light 0.0099523 0.0 0.0199046 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