condition mean min max ZT0-3 122.85 122.85 122.85 ZT4-7 29.3 29.3 29.3 ZT8-11 46.75 46.75 46.75 ZT12-15 21.150000000000002 21.150000000000002 21.150000000000002 ZT16-19 32.1 32.1 32.1 ZT20-23 123.0 123.0 123.0