condition mean min max ZT0-3 70.859301 70.859301 70.859301 ZT4-7 90.2992 90.2992 90.2992 ZT8-11 114.4703955 114.4703955 114.4703955 ZT12-15 107.3108175 107.3108175 107.3108175 ZT16-19 93.16591149999999 93.16591149999999 93.16591149999999 ZT20-23 100.62424949999999 100.62424949999999 100.62424949999999