condition mean min max ZT0-3 109.5326334975 100.736095095 118.32917189999999 ZT4-7 112.70847791 111.29552851999999 114.12142730000001 ZT8-11 94.44087778333333 73.90978913000001 114.97196643666666 ZT12-15 86.71133479333334 80.92397830666667 92.49869128 ZT16-19 93.52477748166667 92.86767565000001 94.18187931333334 ZT20-23 72.73437722333334 69.77542051 75.69333393666668