condition mean min max 4 h after light 0.00577245 0.0 0.0115449 8 h after light 0.0078892 0.0 0.0157784 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0