condition mean min max ZT0-3 92.83333332000001 92.83333332000001 92.83333332000001 ZT4-7 93.37222222333334 93.37222222333334 93.37222222333334 ZT8-11 99.86000001 99.86000001 99.86000001 ZT12-15 110.98 110.98 110.98 ZT16-19 89.61777778 89.61777778 89.61777778 ZT20-23 94.22555556666667 94.22555556666667 94.22555556666667