condition mean min max ZT0-3 55.273875000000004 52.547200000000004 58.000550000000004 ZT4-7 76.47375 76.47375 76.47375 ZT8-11 50.498999999999995 50.498999999999995 50.498999999999995 ZT12-15 0 0 0 ZT16-19 85.12790000000001 85.12790000000001 85.12790000000001 ZT20-23 74.36185 74.36185 74.36185