condition mean min max ZT0-3 158.6 158.6 158.6 ZT4-7 197.6 197.6 197.6 ZT8-11 192.35 192.35 192.35 ZT12-15 199.9 199.9 199.9 ZT16-19 172.0 172.0 172.0 ZT20-23 154.5 154.5 154.5