condition mean min max ZT0-3 0.04077325 0.0 0.0815465 ZT4-7 0.0 0.0 0.0 ZT8-11 0.163907 0.163907 0.163907 ZT12-15 0 0 0 ZT16-19 0.16071000000000002 0.16071000000000002 0.16071000000000002 ZT20-23 0.0 0.0 0.0