condition mean min max ZT0-3 10.612463 10.612463 10.612463 ZT4-7 11.110828000000001 11.110828000000001 11.110828000000001 ZT8-11 10.768879 10.768879 10.768879 ZT12-15 9.824057 9.824057 9.824057 ZT16-19 10.0307485 10.0307485 10.0307485 ZT20-23 12.1450435 12.1450435 12.1450435