condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.16400232866666667 0.0 0.32800465733333334 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06663308700000001 0.0 0.13326617400000002 ZT20-23 0.0 0.0 0.0