condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.029564999999999998 0.029564999999999998 0.029564999999999998 ZT12-15 0.0093928875 0.0 0.018785775 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0