condition mean min max ZT0-3 91.59565 91.59565 91.59565 ZT4-7 80.56575000000001 80.56575000000001 80.56575000000001 ZT8-11 47.225300000000004 47.225300000000004 47.225300000000004 ZT12-15 81.29875000000001 81.29875000000001 81.29875000000001 ZT16-19 74.1896 74.1896 74.1896 ZT20-23 122.00049999999999 122.00049999999999 122.00049999999999