condition mean min max 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 4 h after dark 0.0 0.0 0.0 8 h after dark 0.006264866666666667 0.0 0.0187946 12 h after dark 0.0074904 0.0 0.0224712