condition mean min max ZT0-3 0.38866833333333334 0.0 1.166005 ZT4-7 0.146152 0.146152 0.146152 ZT8-11 0.0 0.0 0.0 ZT12-15 0.89586 0.118335 1.673385 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0