condition mean min max ZT0-3 273.216 269.04150000000004 277.3905 ZT4-7 117.8515 117.8515 117.8515 ZT8-11 147.637 147.637 147.637 ZT12-15 0 0 0 ZT16-19 139.81915 139.81915 139.81915 ZT20-23 209.244 209.244 209.244