condition mean min max ZT0-3 0.05334976425 0.0 0.1066995285 ZT4-7 0.0934917705 0.0 0.186983541 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.017573849500000002 0.0 0.035147699000000004 ZT20-23 0.0 0.0 0.0