condition mean min max ZT0-3 192.854625 192.854625 192.854625 ZT4-7 179.03252 179.03252 179.03252 ZT8-11 151.6501335 151.6501335 151.6501335 ZT12-15 180.42610100000002 180.42610100000002 180.42610100000002 ZT16-19 168.0557605 168.0557605 168.0557605 ZT20-23 191.980575 191.980575 191.980575