condition mean min max ZT0-3 14.113999999999999 12.84845 16.6266 ZT4-7 10.762635 10.762635 10.762635 ZT8-11 10.06057 10.06057 10.06057 ZT12-15 17.824175 17.42865 18.2197 ZT16-19 10.77611 10.77611 10.77611 ZT20-23 17.23575 17.23575 17.23575