condition mean min max ZT0-3 13.0093 13.0093 13.0093 ZT4-7 10.949169999999999 10.949169999999999 10.949169999999999 ZT8-11 9.373655 9.373655 9.373655 ZT12-15 10.975705000000001 10.975705000000001 10.975705000000001 ZT16-19 11.42465 11.42465 11.42465 ZT20-23 11.8142 11.8142 11.8142