rename land_frac to f_land in szr/szo fmv13

src/ascat/read_native/eps_native.py

@@ -1838,7 +1838,7 @@ def read_szx_fmv_13(eps_file):
     fields = [("sigma0_trip", long_nan), ("inc_angle_trip", uint_nan),
               ("azi_angle_trip", int_nan), ("kp", uint_nan),
               ("num_val_trip", ulong_nan), ("f_kp", byte_nan),
-              ("f_usable", byte_nan)]
+              ("f_usable", byte_nan), ("land_frac", uint_nan)]
 
     for f, nan_val in fields:
         data[f] = raw_data[f.upper()].reshape(n_records, 3)
@@ -1863,6 +1863,8 @@ def read_szx_fmv_13(eps_file):
 
     data["swath_indicator"] = data.pop("swath indicator")
 
+    data["f_land"] = data.pop("land_frac")
+
     return data, metadata