condition mean min max ZT0-3 107.44999999999999 107.44999999999999 107.44999999999999 ZT4-7 179.9 179.9 179.9 ZT8-11 181.3 181.3 181.3 ZT12-15 144.05 144.05 144.05 ZT16-19 137.05 137.05 137.05 ZT20-23 127.95 127.95 127.95