condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.011948750000000001 0.011948750000000001 0.011948750000000001 ZT16-19 0.012748083333333333 0.012748083333333333 0.012748083333333333 ZT20-23 0.0 0.0 0.0