condition mean min max ZT0-3 68.675 68.675 68.675 ZT4-7 36.840199999999996 36.840199999999996 36.840199999999996 ZT8-11 24.5562 24.5562 24.5562 ZT12-15 52.489999999999995 52.489999999999995 52.489999999999995 ZT16-19 87.4015 87.4015 87.4015 ZT20-23 95.49176666666666 95.49176666666666 95.49176666666666