condition mean min max ZT0-3 44.31815 44.31815 44.31815 ZT4-7 64.82679999999999 64.82679999999999 64.82679999999999 ZT8-11 38.6763 38.6763 38.6763 ZT12-15 28.1533 28.1533 28.1533 ZT16-19 40.6952 40.6952 40.6952 ZT20-23 30.966900000000003 30.966900000000003 30.966900000000003