Fix #37 normal effective temperature parenthesis

tests/net.csv

@@ -1,50 +1,50 @@
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tests/test_scalars.py

@@ -144,7 +144,7 @@ def test_normal_effective_temperature(self):
         rh = np.array([80])
         net = np.array([tmf.calculate_normal_effective_temperature(t2_k, va, rh)])
         # print(f"net {net}")
-        assert net == pytest.approx(314.7102642987715, abs=1e-6)
+        assert net == pytest.approx(304.13650125, abs=1e-6)
 
     def test_apparent_temperature(self):
         t2_k = np.array([tmf.celsius_to_kelvin(25.0)])

thermofeel/thermofeel.py

@@ -678,7 +678,7 @@ def calculate_normal_effective_temperature(t2_k, va, rh):
     ditermeq = 1 / (1.76 + 1.4 * v**0.75)
     net = (
         37
-        - (37 - t2_k / (0.68 - 0.0014 * rh + ditermeq))
+        - ((37 - t2_k) / (0.68 - 0.0014 * rh + ditermeq))
         - 0.29 * t2_k * (1 - 0.01 * rh)
     )
     net_k = celsius_to_kelvin(net)