condition mean min max ZT0-3 0.008794675 0.0 0.01758935 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.013991024999999999 0.00885275 0.0191293 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0