FRQ
   26 CERATOPHYLLUM DEMERSUM  1-6
   26 CERATOPHYLLUM DEMERSUM  4-6
   21 TRAPA NATANS L.         1-6

   11 RANUNCULUS CIRCINATUS S 1-6
   10 RANUNCULUS CIRCINATUS S 3-6
    8 TRAPA NATANS L.         4-6

    8 MYRIOPHYLLUM SPICATUM L 1-6
    7 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON PECTINATUS  1-6