condition mean min max ZT0-3 9.41496 8.77357 10.05635 ZT4-7 14.10215 14.10215 14.10215 ZT8-11 15.19845 15.19845 15.19845 ZT12-15 0 0 0 ZT16-19 13.1686 13.1686 13.1686 ZT20-23 10.923449999999999 10.923449999999999 10.923449999999999