condition mean min max ZT0-3 4.12181755725 1.256661675 6.9869734395 ZT4-7 15.199286175 13.99097927 16.407593079999998 ZT8-11 34.15035799 25.216891580000002 43.0838244 ZT12-15 78.65427840750002 68.854184665 88.45437215000001 ZT16-19 65.982279945 64.688353355 67.276206535 ZT20-23 55.7886049 54.86518309 56.71202671