condition mean min max ZT0-3 0.0375003 0.0375003 0.0375003 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0211429 0.0211429 0.0211429 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0