condition mean min max ZT0-3 13.68675 13.68675 13.68675 ZT4-7 11.39125 11.39125 11.39125 ZT8-11 10.275929999999999 10.275929999999999 10.275929999999999 ZT12-15 12.7478 12.7478 12.7478 ZT16-19 16.33785 16.33785 16.33785 ZT20-23 13.613949999999999 13.613949999999999 13.613949999999999