condition mean min max ZT0-3 135.472292325 126.99187659999998 143.95270805 ZT4-7 104.75176001 82.134799145 127.368720875 ZT8-11 83.700607715 74.51145460000001 92.88976083 ZT12-15 172.80747582499998 160.6756146 184.93933705 ZT16-19 188.62232145000002 173.59387915000002 203.65076375 ZT20-23 128.957968975 114.00419805000001 143.9117399