condition mean min max ZT0-3 2101.0950000000003 1971.5 2230.69 ZT4-7 2916.205 2916.205 2916.205 ZT8-11 2943.41 2943.41 2943.41 ZT12-15 0 0 0 ZT16-19 1282.205 1282.205 1282.205 ZT20-23 1428.475 1428.475 1428.475