condition mean min max ZT0-3 10.696672500000002 10.450445 10.942900000000002 ZT4-7 12.40895 12.40895 12.40895 ZT8-11 20.20165 20.20165 20.20165 ZT12-15 0 0 0 ZT16-19 14.37555 14.37555 14.37555 ZT20-23 16.15035 16.15035 16.15035