condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.02787335 0.02787335 0.02787335 ZT8-11 0.0 0.0 0.0 ZT12-15 0.032143725 0.0318287 0.03245875 ZT16-19 0.08302445 0.08302445 0.08302445 ZT20-23 0.0 0.0 0.0