condition mean min max ZT0-3 45.195233333333334 33.748200000000004 64.47215 ZT4-7 50.88405 50.88405 50.88405 ZT8-11 58.338 58.338 58.338 ZT12-15 31.245025 25.8211 36.668949999999995 ZT16-19 24.996850000000002 24.996850000000002 24.996850000000002 ZT20-23 42.001149999999996 42.001149999999996 42.001149999999996