condition mean min max ZT0-3 85.37344999999999 85.37344999999999 85.37344999999999 ZT4-7 76.6623 76.6623 76.6623 ZT8-11 81.78745 81.78745 81.78745 ZT12-15 62.254099999999994 62.254099999999994 62.254099999999994 ZT16-19 85.2071 85.2071 85.2071 ZT20-23 90.29329999999999 90.29329999999999 90.29329999999999