condition mean min max ZT0-3 118.0 118.0 118.0 ZT4-7 116.3 116.3 116.3 ZT8-11 120.35000000000001 120.35000000000001 120.35000000000001 ZT12-15 181.60000000000002 181.60000000000002 181.60000000000002 ZT16-19 180.4 180.4 180.4 ZT20-23 163.85000000000002 163.85000000000002 163.85000000000002