condition mean min max ZT0-3 10.732325 10.732325 10.732325 ZT4-7 10.610314500000001 10.610314500000001 10.610314500000001 ZT8-11 11.604466500000001 11.604466500000001 11.604466500000001 ZT12-15 10.857516 10.857516 10.857516 ZT16-19 10.6148585 10.6148585 10.6148585 ZT20-23 11.172279 11.172279 11.172279