condition mean min max ZT0-3 96.43683333333333 54.59785 147.39749999999998 ZT4-7 56.32585 56.32585 56.32585 ZT8-11 59.13965 59.13965 59.13965 ZT12-15 93.46365 74.90645 112.02085 ZT16-19 111.239 111.239 111.239 ZT20-23 135.93200000000002 135.93200000000002 135.93200000000002