condition mean min max ZT0-3 0.016064725 0.016064725 0.016064725 ZT4-7 0.014094250000000001 0.014094250000000001 0.014094250000000001 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.012547905833333333 0.012547905833333333 0.012547905833333333 ZT20-23 0.0 0.0 0.0