condition mean min max ZT0-3 804.55 804.55 804.55 ZT4-7 755.0 755.0 755.0 ZT8-11 651.8499999999999 651.8499999999999 651.8499999999999 ZT12-15 601.1500000000001 601.1500000000001 601.1500000000001 ZT16-19 796.45 796.45 796.45 ZT20-23 880.7 880.7 880.7