condition mean min max ZT0-3 0.44463850000000005 0.293669 0.595608 ZT4-7 1.41269 1.41269 1.41269 ZT8-11 8.394275 8.394275 8.394275 ZT12-15 0 0 0 ZT16-19 0.4893335 0.4893335 0.4893335 ZT20-23 0.0 0.0 0.0