condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0529755 0.0 0.105951 4 h after dark 0.0256636 0.0 0.0513272 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0