condition mean min max ZT0-3 36.4197520125 34.18119757 38.658306455 ZT4-7 35.383045957499995 34.20581958 36.56027233499999 ZT8-11 58.1035704625 43.875146285 72.33199464 ZT12-15 98.01140453250001 95.12375152500002 100.89905754 ZT16-19 98.399125045 92.10823209 104.690018 ZT20-23 81.5042160725 78.51529866499999 84.49313348000001