condition mean min max ZT0-3 965.6658223 465.3489576 1465.982687 ZT4-7 93.31378062 76.840033925 109.787527315 ZT8-11 114.997379435 82.770522965 147.224235905 ZT12-15 123.892432535 113.674596315 134.110268755 ZT16-19 176.62417240000002 170.74962820000002 182.4987166 ZT20-23 238.062958225 230.8871438 245.23877265