condition mean min max ZT0-3 1.14074725 1.026672 1.2548225 ZT4-7 2.184925 2.184925 2.184925 ZT8-11 2.40547 2.40547 2.40547 ZT12-15 0 0 0 ZT16-19 2.355715 2.355715 2.355715 ZT20-23 2.527655 2.527655 2.527655