condition mean min max ZT0-3 0.07935992774999999 0.0437905085 0.11492934699999999 ZT4-7 0.1378992295 0.084697231 0.191101228 ZT8-11 0.60509043075 0.602804341 0.6073765205 ZT12-15 6.0962741565 4.433628592 7.758919721 ZT16-19 11.19102222225 7.9495859345 14.43245851 ZT20-23 30.009578202499995 20.23164399 39.787512414999995