condition mean min max ZT0-3 81.324945 81.324945 81.324945 ZT4-7 108.66697400000001 108.66697400000001 108.66697400000001 ZT8-11 95.890399 95.890399 95.890399 ZT12-15 98.6172325 98.6172325 98.6172325 ZT16-19 74.2230705 74.2230705 74.2230705 ZT20-23 71.925243 71.925243 71.925243