condition mean min max ZT0-3 47.7 47.7 47.7 ZT4-7 8.0 8.0 8.0 ZT8-11 30.0 30.0 30.0 ZT12-15 82.30000000000001 82.30000000000001 82.30000000000001 ZT16-19 105.7 105.7 105.7 ZT20-23 37.9 37.9 37.9