condition mean min max ZT0-3 0.0060261333333333335 0.0 0.0180784 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0166296 0.0166296 0.0166296 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0154766 0.0154766 0.0154766 ZT20-23 0.01746605 0.01746605 0.01746605