Line;Column;"Entire valve";A;B;C;D "Population of the Syskyuyanyoki river (30 samples)" "Left valve" 1;"0.49 ± 0.14";"0.55 ± 0.08";"0.52 ± 0.06";"0.24 ± 0.09";"0.66 ± 0.05" 2;"0.78 ± 0.13";"0.70 ± 0.07";"0.49 ± 0.07";"0.55 ± 0.08" 3;"1.00 ± 0.20";"0.95 ± 0.10";"0.62 ± 0.08";"0.62 ± 0.08" "Right valve" 1;"0.90 ± 0.20";"0.63 ± 0.10";"0.42 ± 0.07";"0.67 ± 0.24";"0.66 ± 0.05" 2;"0.65 ± 0.08";"0.68 ± 0.08";"0.38 ± 0.05";"0.64 ± 0.10" 3;"1.12 ± 0.16";"0.81 ± 0.08";"0.67 ± 0.08";"1.03 ± 0.17" "Population of the Livoyoki river (13 samples)" "Left valve" 1;"1.28 ± 0.48";"1.12 ± 0.25";"0.76 ± 0.17";"0.69 ± 0.38";"0.87 ± 0.10" 2;"0.96 ± 0.09";"1.09 ± 0.10";"0.63 ± 0.09";"0.73 ± 0.10" 3;"0.75 ± 0.14";"0.57 ± 0.10";"0.96 ± 0.10";"0.72 ± 0.13" "Right valve" 1;"1.47 ± 0.30";"1.13 ± 0.21";"1.20 ± 0.45";"1.17 ± 0.47";"0.88 ± 0.10" 2;"1.11 ± 0.17";"1.26 ± 0.17";"0.63 ± 0.10";"0.44 ± 0.06" 3;"0.75 ± 0.11";"0.64 ± 0.05";"0.69 ± 0.07";"0.57 ± 0.09"