condition mean min max ZT0-3 124.30000000000001 124.30000000000001 124.30000000000001 ZT4-7 152.1 152.1 152.1 ZT8-11 172.4 172.4 172.4 ZT12-15 138.1 138.1 138.1 ZT16-19 127.0 127.0 127.0 ZT20-23 156.5 156.5 156.5