condition mean min max ZT0-3 0.0674145 0.0674145 0.0674145 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1216555 0.1216555 0.1216555 ZT12-15 0.362898 0.362898 0.362898 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0