condition mean min max ZT0-3 142.109920075 131.0467017 153.17313845 ZT4-7 134.12937749999998 133.00397479999998 135.2547802 ZT8-11 148.6122476 123.62366079999998 173.6008344 ZT12-15 79.16648538500002 43.54543144 114.78753933000002 ZT16-19 43.350563945 39.144074724999996 47.557053165 ZT20-23 111.77374026500001 73.04310283000001 150.50437770000002