condition mean min max ZT0-3 86.4314 80.09604999999999 92.76675 ZT4-7 35.191199999999995 35.191199999999995 35.191199999999995 ZT8-11 27.7121 27.7121 27.7121 ZT12-15 0 0 0 ZT16-19 47.915099999999995 47.915099999999995 47.915099999999995 ZT20-23 58.452349999999996 58.452349999999996 58.452349999999996