condition mean min max ZT0-3 5478.75 5478.75 5478.75 ZT4-7 4962.6 4962.6 4962.6 ZT8-11 4884.5 4884.5 4884.5 ZT12-15 4810.700000000001 4810.700000000001 4810.700000000001 ZT16-19 5265.549999999999 5265.549999999999 5265.549999999999 ZT20-23 5136.200000000001 5136.200000000001 5136.200000000001