0.22 HIPPURIS VULGARIS L.    3-6
 0.43 HOTTONIA PALUSTRIS L.   1-6
 0.45 SPARGANIUM SIMPLEX HUDS 1-6
 0.46 RANUNCULUS CIRCINATUS S 1-6
 0.47 SAGITTARIA SAGITTIFOLIA 1-6
 0.47 MYRIOPHYLLUM VERTICILLA 1-6
 0.49 CALLITRICHE OBTUSANGULA 1-6
 0.49 POTAMOGETON NATANS L.   1-6
 0.50 HELODEA CANADENSIS RICH 1-6
   0.50 NYMPHOIDES PELTATA (GME 1-6
 0.50 NUPHAR LUTEUM SM.       1-6
 0.51 MYRIOPHYLLUM SPICATUM L 1-6
 0.52 POTAMOGETON LUCENS L.   1-6
 0.53 SPARGANIUM SIMPLEX HUDS 3-6
 0.53 HYDROCHARIS MORSUS-RANA 1-6
 0.53 POTAMOGETON DENSUS L.   1-6
 0.54 RANUNCULUS CIRCINATUS S 3-6
 0.54 CERATOPHYLLUM DEMERSUM  1-6
 0.55 CALLITRICHE OBTUSANGULA 3-6
 0.55 HOTTONIA PALUSTRIS L.   3-6
 0.55 SIUM ERECTUM HUDSON     1-6
 0.55 RANUNCULUS TRICHOPHYLLU 1-5
 0.56 SAGITTARIA SAGITTIFOLIA 3-6
 0.56 POTAMOGETON PUSILLUS L. 1-6
 0.56 POTAMOGETON PECTINATUS  1-6
 0.56 LEMNA MINOR L.          1-6
 0.58 POTAMOGETON CRISPUS L.  1-6
 0.58 HELODEA CANADENSIS RICH 4-6
 0.59 NYMPHAEA ALBA L.        1-6
   0.59 LUDWIGIA PALUSTRIS (L.) 1-6