condition mean min max ZT0-3 11.7214 11.7214 11.7214 ZT4-7 24.75145 24.75145 24.75145 ZT8-11 12.3047 12.3047 12.3047 ZT12-15 5.6000499999999995 5.6000499999999995 5.6000499999999995 ZT16-19 0.5616585000000001 0.5616585000000001 0.5616585000000001 ZT20-23 0.8578380000000001 0.8578380000000001 0.8578380000000001