condition mean min max ZT0-3 177.1 177.1 177.1 ZT4-7 140.1 140.1 140.1 ZT8-11 132.5 132.5 132.5 ZT12-15 129.05 129.05 129.05 ZT16-19 172.8 172.8 172.8 ZT20-23 139.1 139.1 139.1