condition mean min max ZT0-3 95.737425895 94.72795319 96.74689860000001 ZT4-7 71.11841179 66.24944805666667 75.98737552333333 ZT8-11 80.7789766 80.72669792 80.83125528 ZT12-15 65.02570095333334 63.81198139333333 66.23942051333334 ZT16-19 82.78307947166667 79.94493980333334 85.62121914 ZT20-23 75.43874991999999 64.78407577666667 86.09342406333333