condition mean min max ZT0-3 96.67818544416667 66.774055175 126.58231571333333 ZT4-7 77.04075070333334 77.03847971666667 77.04302169 ZT8-11 86.10297751166667 85.18863405 87.01732097333334 ZT12-15 101.868479555 91.32050099 112.41645812 ZT16-19 83.77997888166666 79.2976167 88.26234106333334 ZT20-23 79.11004268833334 78.00914251 80.21094286666667