condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.004387091666666666 0.004387091666666666 0.004387091666666666 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.011204249999999999 0.011204249999999999 0.011204249999999999 ZT20-23 0.00995 0.00995 0.00995