condition mean min max ZT0-3 79.8753 70.06215 94.29845 ZT4-7 71.13345 71.13345 71.13345 ZT8-11 73.6319 73.6319 73.6319 ZT12-15 96.94647499999999 95.2829 98.61005 ZT16-19 94.80494999999999 94.80494999999999 94.80494999999999 ZT20-23 96.47465 96.47465 96.47465