condition mean min max ZT0-3 14.7145825 9.850764999999999 19.578400000000002 ZT4-7 10.040135 10.040135 10.040135 ZT8-11 6.451264999999999 6.451264999999999 6.451264999999999 ZT12-15 0 0 0 ZT16-19 10.293154999999999 10.293154999999999 10.293154999999999 ZT20-23 11.0932 11.0932 11.0932