condition mean min max ZT0-3 94.45 94.45 94.45 ZT4-7 180.4 180.4 180.4 ZT8-11 159.35 159.35 159.35 ZT12-15 121.6 121.6 121.6 ZT16-19 172.5 172.5 172.5 ZT20-23 153.5 153.5 153.5