condition mean min max ZT0-3 89.87627007833333 84.51034439666667 95.24219575999999 ZT4-7 95.25695789166666 93.86278082333332 96.65113496 ZT8-11 101.199277445 98.13652407666667 104.26203081333334 ZT12-15 105.79020834666667 102.07457606 109.50584063333334 ZT16-19 114.00386044999999 106.4356341 121.5720868 ZT20-23 92.511824215 90.17887315 94.84477528000001