condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0238563 0.0 0.0715689 12 h after light 0.031359033333333335 0.0 0.0940771 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