condition mean min max ZT0-3 47.540567 47.540567 47.540567 ZT4-7 39.79953 39.79953 39.79953 ZT8-11 39.995425 39.995425 39.995425 ZT12-15 46.368141 46.368141 46.368141 ZT16-19 83.847466 83.847466 83.847466 ZT20-23 73.13946100000001 73.13946100000001 73.13946100000001