condition mean min max ZT0-3 98.02285 98.02285 98.02285 ZT4-7 394.155 394.155 394.155 ZT8-11 428.7315 428.7315 428.7315 ZT12-15 160.58749999999998 160.58749999999998 160.58749999999998 ZT16-19 53.74625 53.74625 53.74625 ZT20-23 54.6075 54.6075 54.6075