0.29 LEMNA TRISULCA L.       1-6
 0.31 HYDROCHARIS MORSUS-RANA 4-6
 0.38 LEMNA MINOR L.          1-6
 0.39 SPIRODELA POLYRRHIZA (L 1-6
 0.45 HOTTONIA PALUSTRIS L.   1-6
 0.46 LEMNA TRISULCA L.       4-6
 0.46 LEMNA MINOR L.          3-6
 0.47 CERATOPHYLLUM DEMERSUM  1-6
 0.47 POTAMOGETON NATANS L.   1-6
 0.48 HELODEA CANADENSIS RICH 1-6
 0.49 SAGITTARIA SAGITTIFOLIA 1-6
 0.49 UTRICULARIA VULGARIS L. 1-6
 0.50 HOTTONIA PALUSTRIS L.   3-6
 0.51 RANUNCULUS CIRCINATUS S 1-6
 0.51 MYRIOPHYLLUM VERTICILLA 1-6
   0.51 POTAMOGETON COMPRESSUS  1-3
 0.51 NUPHAR LUTEUM SM.       1-6
 0.52 SPARGANIUM SIMPLEX HUDS 1-6
 0.53 HIPPURIS VULGARIS L.    1-6
   0.54 SALVINIA NATANS (L.) AL 1-6
 0.54 SPIRODELA POLYRRHIZA (L 3-6
 0.54 MYRIOPHYLLUM SPICATUM L 1-6
 0.54 NYMPHAEA ALBA L.        1-6
 0.55 CALLITRICHE OBTUSANGULA 1-6
 0.55 POTAMOGETON LUCENS L.   1-6
 0.55 CERATOPHYLLUM DEMERSUM  5-6
 0.55 POTAMOGETON CRISPUS L.  1-6
 0.56 UTRICULARIA VULGARIS L. 3-6
 0.56 HELODEA CANADENSIS RICH 4-6
 0.56 HIPPURIS VULGARIS L.    3-6