0.28 HOTTONIA PALUSTRIS L.   3-6
 0.39 POTAMOGETON NATANS L.   1-6
 0.39 SAGITTARIA SAGITTIFOLIA 1-6
 0.42 SPARGANIUM SIMPLEX HUDS 1-6
 0.43 HIPPURIS VULGARIS L.    1-6
 0.43 HELODEA CANADENSIS RICH 1-6
 0.44 NUPHAR LUTEUM SM.       1-6
 0.45 HYDROCHARIS MORSUS-RANA 1-6
 0.46 POTAMOGETON LUCENS L.   1-6
 0.46 HIPPURIS VULGARIS L.    3-6
 0.46 LEMNA MINOR L.          1-6
 0.47 RANUNCULUS CIRCINATUS S 1-6
 0.47 MYRIOPHYLLUM VERTICILLA 1-6
 0.47 MYRIOPHYLLUM SPICATUM L 1-6
 0.49 SPARGANIUM SIMPLEX HUDS 3-6
 0.49 LEMNA TRISULCA L.       1-6
 0.51 CALLITRICHE OBTUSANGULA 1-6
 0.51 POTAMOGETON NATANS L.   5-6
 0.51 POTAMOGETON PUSILLUS L. 1-6
 0.51 NYMPHAEA ALBA L.        1-6
 0.52 SAGITTARIA SAGITTIFOLIA 3-6
 0.52 CERATOPHYLLUM DEMERSUM  1-6
 0.53 POTAMOGETON CRISPUS L.  1-6
 0.53 HELODEA CANADENSIS RICH 4-6
 0.53 UTRICULARIA MAJOR SCHMI 1-6
 0.53 POTAMOGETON DENSUS L.   1-6
 0.53 ALISMA NATANS L.        1-4
   0.54 LUDWIGIA PALUSTRIS (L.) 1-6
 0.54 RANUNCULUS CIRCINATUS S 3-6
 0.54 UTRICULARIA VULGARIS L. 1-6