condition mean min max ZT0-3 0.0012106250000000001 0.0 0.0024212500000000002 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.024691 0.0 0.049382 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00198336 0.00198336 0.00198336