0.30 NUPHAR LUTEUM SM.       5-6
 0.32 MYRIOPHYLLUM VERTICILLA 1-6
 0.36 MYRIOPHYLLUM SPICATUM L 1-6
 0.37 POTAMOGETON LUCENS L.   1-6
 0.39 CERATOPHYLLUM DEMERSUM  1-6
 0.39 POTAMOGETON NATANS L.   1-6
 0.42 RANUNCULUS CIRCINATUS S 1-6
 0.43 NYMPHAEA ALBA L.        1-6
 0.43 SAGITTARIA SAGITTIFOLIA 1-6
 0.43 HELODEA CANADENSIS RICH 1-6
 0.44 HOTTONIA PALUSTRIS L.   1-6
 0.46 POTAMOGETON PECTINATUS  1-6
 0.48 SPARGANIUM SIMPLEX HUDS 1-6
 0.48 POTAMOGETON CRISPUS L.  1-6
 0.50 HIPPURIS VULGARIS L.    1-6
 0.50 SAGITTARIA SAGITTIFOLIA 3-6
 0.50 POTAMOGETON LUCENS L.   4-6
 0.50 MYRIOPHYLLUM VERTICILLA 4-6
 0.51 POTAMOGETON PUSILLUS L. 1-6
 0.51 HIPPURIS VULGARIS L.    3-6
 0.51 HYDROCHARIS MORSUS-RANA 1-6
 0.51 RANUNCULUS CIRCINATUS S 3-6
 0.51 POTAMOGETON PERFOLIATUS 1-6
   0.52 NAIAS MAJOR ALL.        1-6
 0.52 HELODEA CANADENSIS RICH 4-6
 0.52 CALLITRICHE OBTUSANGULA 1-6
 0.52 MYRIOPHYLLUM SPICATUM L 4-6
 0.53 POTAMOGETON NATANS L.   5-6
 0.53 HOTTONIA PALUSTRIS L.   3-6
 0.54 CERATOPHYLLUM DEMERSUM  5-6