condition mean min max Sterile Leaflet 3.1219806666666665 0.543272 7.04836 Fertile Leaflet with Sori 12.253306666666667 7.36262 16.6095 Primary Rachis 0.033208999999999995 0.0 0.099627 Secondary Rachis 1.680961 0.841563 2.78995 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.051247999999999995 0.0 0.153744