condition mean min max ZT0-3 17.65355 17.65355 17.65355 ZT4-7 14.221699999999998 14.221699999999998 14.221699999999998 ZT8-11 16.2174 16.2174 16.2174 ZT12-15 17.7646 17.7646 17.7646 ZT16-19 28.49465 28.49465 28.49465 ZT20-23 19.114649999999997 19.114649999999997 19.114649999999997