condition mean min max ZT0-3 0.253202 0.250131 0.256273 ZT4-7 1.66201 1.66201 1.66201 ZT8-11 1.0279099999999999 1.0279099999999999 1.0279099999999999 ZT12-15 0 0 0 ZT16-19 1.13409 1.13409 1.13409 ZT20-23 2.407325 2.407325 2.407325