fix mistake in calculation of CRPS

src/probabilist/evaluator_quantiles.cpp

@@ -90,7 +90,7 @@ namespace evalhyd
             // integrate with trapezoidal rule
             crps = xt::view(
                     // xt::trapz(y, dx=1/(n+1), axis=0)
-                    xt::trapz(qs, 1./(double(n_mbr) + .1), 0),
+                    xt::trapz(qs, 1./(double(n_mbr) + 1.), 0),
                     xt::newaxis(), xt::all()
             );
         }

tests/test_probabilist.cpp

@@ -115,7 +115,7 @@ TEST(ProbabilistTests, TestQuantiles)
 
     // Continuous ranked probability scores
     xt::xtensor<double, 3> crps =
-            {{{ 257.412129}}};
+            {{{252.956919}}};
     EXPECT_TRUE(xt::allclose(metrics[1], crps));
 }