condition mean min max ZT0-3 236.05 236.05 236.05 ZT4-7 143.8 143.8 143.8 ZT8-11 171.55 171.55 171.55 ZT12-15 199.0 199.0 199.0 ZT16-19 209.8 209.8 209.8 ZT20-23 217.8 217.8 217.8