condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.066396 0.066396 0.066396 ZT8-11 0.33691150000000003 0.33691150000000003 0.33691150000000003 ZT12-15 0.533159 0.31447250000000004 0.7518455 ZT16-19 0.09658385 0.09658385 0.09658385 ZT20-23 0.073499 0.073499 0.073499