condition mean min max ZT0-3 0.008075500000000001 0.0 0.0242265 ZT4-7 0.0 0.0 0.0 ZT8-11 0.07486875000000001 0.07486875000000001 0.07486875000000001 ZT12-15 0.049273525 0.04866395 0.0498831 ZT16-19 0.0 0.0 0.0 ZT20-23 0.07980525 0.07980525 0.07980525