condition mean min max ZT0-3 112.924365 112.924365 112.924365 ZT4-7 95.65859599999999 95.65859599999999 95.65859599999999 ZT8-11 99.0336525 99.0336525 99.0336525 ZT12-15 127.0696165 127.0696165 127.0696165 ZT16-19 117.513934 117.513934 117.513934 ZT20-23 142.9105695 142.9105695 142.9105695