condition mean min max ZT0-3 10.141265 10.141265 10.141265 ZT4-7 11.0700325 11.0700325 11.0700325 ZT8-11 10.434137 10.434137 10.434137 ZT12-15 9.4200255 9.4200255 9.4200255 ZT16-19 9.8748225 9.8748225 9.8748225 ZT20-23 10.521707 10.521707 10.521707