condition mean min max ZT0-3 80.30006666666667 64.7518 90.99275 ZT4-7 53.8478 53.8478 53.8478 ZT8-11 51.6896 51.6896 51.6896 ZT12-15 58.087475 56.66685 59.5081 ZT16-19 68.04849999999999 68.04849999999999 68.04849999999999 ZT20-23 98.349 98.349 98.349