condition mean min max ZT0-3 1224.65 1224.65 1224.65 ZT4-7 862.7 862.7 862.7 ZT8-11 759.0999999999999 759.0999999999999 759.0999999999999 ZT12-15 912.0 912.0 912.0 ZT16-19 1065.0 1065.0 1065.0 ZT20-23 1265.35 1265.35 1265.35