condition mean min max ZT0-3 181.35 181.35 181.35 ZT4-7 82.5 82.5 82.5 ZT8-11 108.9 108.9 108.9 ZT12-15 117.05000000000001 117.05000000000001 117.05000000000001 ZT16-19 187.95 187.95 187.95 ZT20-23 177.0 177.0 177.0