condition mean min max ZT0-3 71.925707 71.925707 71.925707 ZT4-7 44.927234 44.927234 44.927234 ZT8-11 64.821571 64.821571 64.821571 ZT12-15 74.90178850000001 74.90178850000001 74.90178850000001 ZT16-19 94.77592899999999 94.77592899999999 94.77592899999999 ZT20-23 83.56296499999999 83.56296499999999 83.56296499999999