condition mean min max ZT0-3 195.19638974999998 180.4097779 209.9830016 ZT4-7 786.098968425 393.8484481 1178.3494887499999 ZT8-11 1979.0450815 1760.6660284999998 2197.4241345 ZT12-15 1716.04940675 1282.6333475000001 2149.4654659999997 ZT16-19 488.523990175 321.87768225 655.1702981 ZT20-23 108.488781905 65.70359871 151.2739651