condition mean min max ZT0-3 5.2877475 5.09924 5.476255 ZT4-7 0.9631735 0.9631735 0.9631735 ZT8-11 0.9627064999999999 0.9627064999999999 0.9627064999999999 ZT12-15 0 0 0 ZT16-19 4.716405 4.716405 4.716405 ZT20-23 1.936715 1.936715 1.936715