condition mean min max ZT0-3 77.81773333333334 65.9787 90.21175 ZT4-7 77.18555 77.18555 77.18555 ZT8-11 162.175 162.175 162.175 ZT12-15 143.64524999999998 123.08349999999999 164.207 ZT16-19 97.80675 97.80675 97.80675 ZT20-23 116.243 116.243 116.243