condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0437067335 0.0 0.087413467 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06495933183333334 0.0 0.12991866366666668 ZT20-23 0.0 0.0 0.0