condition mean min max ZT0-3 106.1 106.1 106.1 ZT4-7 101.4385 101.4385 101.4385 ZT8-11 86.06895 86.06895 86.06895 ZT12-15 74.3087 74.3087 74.3087 ZT16-19 87.01050000000001 87.01050000000001 87.01050000000001 ZT20-23 111.33250000000001 111.33250000000001 111.33250000000001