condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.16676049999999998 0.16676049999999998 0.16676049999999998 ZT12-15 0.086381 0.0496075 0.1231545 ZT16-19 0.0222194 0.0222194 0.0222194 ZT20-23 0.02507565 0.02507565 0.02507565