condition mean min max ZT0-3 11.65185 11.65185 11.65185 ZT4-7 5.73365 5.73365 5.73365 ZT8-11 10.297799999999999 10.297799999999999 10.297799999999999 ZT12-15 12.20655 12.20655 12.20655 ZT16-19 15.98365 15.98365 15.98365 ZT20-23 13.954550000000001 13.954550000000001 13.954550000000001