condition mean min max ZT0-3 68.3418 29.1951 89.76310000000001 ZT4-7 61.25195 61.25195 61.25195 ZT8-11 55.9137 55.9137 55.9137 ZT12-15 51.06592499999999 36.130399999999995 66.00144999999999 ZT16-19 89.70745 89.70745 89.70745 ZT20-23 129.038 129.038 129.038