condition mean min max ZT0-3 37.34925 37.282849999999996 37.41565 ZT4-7 33.2873 33.2873 33.2873 ZT8-11 49.66145 49.66145 49.66145 ZT12-15 0 0 0 ZT16-19 45.76305 45.76305 45.76305 ZT20-23 41.5383 41.5383 41.5383