condition mean min max 4 h after light 0.0249641 0.0 0.0499282 8 h after light 0.0272999 0.0 0.0545998 12 h after light 0.074685 0.0 0.14937 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