condition mean min max ZT0-3 0.19479125000000003 0.086415 0.30316750000000003 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.21296500000000002 0.21296500000000002 0.21296500000000002 ZT20-23 0.21341480000000002 0.21341480000000002 0.21341480000000002