diff --git a/geomagio/residual/Calculation.py b/geomagio/residual/Calculation.py
index 12d67b803bb75ff6c48edfab357f84c9c5ac9f35..5352676b752ce974ff81d852ead1ea4d4006da8d 100644
--- a/geomagio/residual/Calculation.py
+++ b/geomagio/residual/Calculation.py
@@ -38,7 +38,12 @@ def calculate(reading: Reading, adjust_reference: bool = True) -> Reading:
     )
     corrected_f = f + reading.pier_correction
     # calculate absolutes, horizontal_component, vertical_component
-    absoluteH, absoluteZ, horizontal_component, vertical_component = calculate_HZ_absolutes(
+    (
+        absoluteH,
+        absoluteZ,
+        horizontal_component,
+        vertical_component,
+    ) = calculate_HZ_absolutes(
         corrected_f=corrected_f,
         inclination=inclination,
         mean=i_mean,
@@ -51,18 +56,17 @@ def calculate(reading: Reading, adjust_reference: bool = True) -> Reading:
         reference=reference,
     )
 
-    d_computed=calculate_D_computed(
+    d_computed = calculate_D_computed(
         measurements=reading.measurements,
         h_baseline=absoluteH.baseline,
     )
 
-
-    r_computed=calculate_R_computed(
-         measurements=reading.measurements,
+    r_computed = calculate_R_computed(
+        measurements=reading.measurements,
         h_baseline=absoluteH.baseline,
     )
 
-    magnetic_south_meridian=calculate_magnetic_south_meridian(
+    magnetic_south_meridian = calculate_magnetic_south_meridian(
         measurements=reading.measurements,
     )
 
@@ -77,31 +81,30 @@ def calculate(reading: Reading, adjust_reference: bool = True) -> Reading:
         )
 
     mean_mark = calculate_mean_mark(
-         measurements=reading.measurements,
+        measurements=reading.measurements,
     )
 
-    magnetic_azimuth_of_mark=calculate_magnetic_azimuth_of_mark(
-        mean_mark=mean_mark,
-        magnetic_south_meridian=magnetic_south_meridian
+    magnetic_azimuth_of_mark = calculate_magnetic_azimuth_of_mark(
+        mean_mark=mean_mark, magnetic_south_meridian=magnetic_south_meridian
     )
 
-    ordinate_f=calculate_ordinate_f(
+    ordinate_f = calculate_ordinate_f(
         corrected_f=corrected_f,
         pier_correction=reading.pier_correction,
     )
 
-    ordinate_d=calculate_ordinate_d(
+    ordinate_d = calculate_ordinate_d(
         absoluteD_absolute=absoluteD.absolute,
         absoluteD_baseline=absoluteD.baseline,
     )
 
-    ordinate_h=calculate_ordinate_h(
+    ordinate_h = calculate_ordinate_h(
         absoluteH_absolute=absoluteH.absolute,
         absoluteH_baseline=absoluteH.baseline,
         ordinate_d=ordinate_d,
     )
 
-    ordinate_z=calculate_ordinate_z(
+    ordinate_z = calculate_ordinate_z(
         absoluteZ_absolute=absoluteZ.absolute,
         absoluteZ_baseline=absoluteZ.baseline,
     )
@@ -121,7 +124,6 @@ def calculate(reading: Reading, adjust_reference: bool = True) -> Reading:
         ordinate_h=ordinate_h,
         ordinate_z=ordinate_z,
         r_computed=r_computed,
-        scale_value=scale_value,
         vertical_component=vertical_component,
     )
 
@@ -129,8 +131,9 @@ def calculate(reading: Reading, adjust_reference: bool = True) -> Reading:
     calculated = Reading(
         absolutes=[absoluteD, absoluteH, absoluteZ],
         diagnostics=diagnostics,
+        scale_value=scale_value,
         # copy other attributes
-        **reading.dict(exclude={"absolutes", "diagnostics"}),
+        **reading.dict(exclude={"absolutes", "diagnostics", "scale_value"}),
     )
 
     return calculated
@@ -236,8 +239,8 @@ def calculate_HZ_absolutes(
 
     #  store the pre-shifted h_abs and the pre-shifted z_abs
     inclination_radians = np.radians(inclination)
-    horizontal_component=corrected_f * np.cos(inclination_radians)
-    vertical_component=corrected_f * np.sin(inclination_radians)
+    horizontal_component = corrected_f * np.cos(inclination_radians)
+    vertical_component = corrected_f * np.sin(inclination_radians)
 
     h_abs = corrected_f * np.cos(inclination_radians)
     z_abs = corrected_f * np.sin(inclination_radians)
@@ -269,7 +272,7 @@ def calculate_HZ_absolutes(
             endtime=endtime,
         ),
         horizontal_component,
-        vertical_component
+        vertical_component,
     )
 
 
@@ -364,8 +367,7 @@ def calculate_scale_value(
     return scale_value
 
 
-def calculate_magnetic_south_meridian(
-    measurements: List[Measurement]) -> float:
+def calculate_magnetic_south_meridian(measurements: List[Measurement]) -> float:
     """Calculate magnetic_south_meridian.
 
     Parameters
@@ -376,24 +378,19 @@ def calculate_magnetic_south_meridian(
     -------
     Calculated magnetic_south_meridian.
     """
-     # declination measurements
+    # declination measurements
     declination_measurements = [
         average_measurement(measurements, [t]) for t in DECLINATION_TYPES
     ]
 
-    magnetic_south_meridian = np.average(
-        [
-            m.angle
-
-            for m in declination_measurements
-        ]
-    )
+    magnetic_south_meridian = np.average([m.angle for m in declination_measurements])
     return magnetic_south_meridian
 
 
 def calculate_D_computed(
     measurements: List[Measurement],
-     h_baseline: float,) -> float:
+    h_baseline: float,
+) -> float:
     """Calculate d_computed.
 
     Parameters
@@ -405,14 +402,14 @@ def calculate_D_computed(
     -------
     Calculated d_computed.
     """
-     # declination measurements
+    # declination measurements
     declination_measurements = [
         average_measurement(measurements, [t]) for t in DECLINATION_TYPES
     ]
 
-
     d_computed = np.average(
-        [np.degrees(np.arctan(m.e / (m.h + h_baseline)))
+        [
+            np.degrees(np.arctan(m.e / (m.h + h_baseline)))
             for m in declination_measurements
         ]
     )
@@ -422,7 +419,8 @@ def calculate_D_computed(
 
 def calculate_R_computed(
     measurements: List[Measurement],
-     h_baseline: float,) -> float:
+    h_baseline: float,
+) -> float:
     """Calculate r_computed.
 
     Parameters
@@ -434,14 +432,14 @@ def calculate_R_computed(
     -------
     Calculated r_computed.
     """
-     # declination measurements
+    # declination measurements
     declination_measurements = [
         average_measurement(measurements, [t]) for t in DECLINATION_TYPES
     ]
 
-
     r_computed = np.average(
-        [ np.degrees(
+        [
+            np.degrees(
                 m.measurement_type.meridian
                 * (np.arcsin(m.residual / np.sqrt((m.h + h_baseline) ** 2 + m.e**2)))
             )
@@ -453,8 +451,8 @@ def calculate_R_computed(
 
 
 def calculate_mean_mark(
-     measurements: List[Measurement],
-    ) -> float:
+    measurements: List[Measurement],
+) -> float:
     """Calculate mean_mark.
 
     Parameters
@@ -474,9 +472,9 @@ def calculate_mean_mark(
 
 
 def calculate_magnetic_azimuth_of_mark(
-     mean_mark: float,
-     magnetic_south_meridian:float,
-    ) -> float:
+    mean_mark: float,
+    magnetic_south_meridian: float,
+) -> float:
     """Calculate magnetic_azimuth_of_mark.
 
     Parameters
@@ -494,10 +492,11 @@ def calculate_magnetic_azimuth_of_mark(
 
     return magnetic_azimuth_of_mark
 
+
 def calculate_ordinate_f(
-     corrected_f: float,
-     pier_correction:float,
-    ) -> float:
+    corrected_f: float,
+    pier_correction: float,
+) -> float:
     """Calculate ordinate_f.
 
     Parameters
@@ -515,10 +514,11 @@ def calculate_ordinate_f(
 
     return ordinate_f
 
+
 def calculate_ordinate_d(
-     absoluteD_absolute: float,
-     absoluteD_baseline:float,
-    ) -> float:
+    absoluteD_absolute: float,
+    absoluteD_baseline: float,
+) -> float:
     """Calculate ordinate_d.
 
     Parameters
@@ -536,10 +536,11 @@ def calculate_ordinate_d(
 
     return ordinate_d
 
+
 def calculate_ordinate_z(
-     absoluteZ_absolute: float,
-     absoluteZ_baseline:float,
-    ) -> float:
+    absoluteZ_absolute: float,
+    absoluteZ_baseline: float,
+) -> float:
     """Calculate ordinate_z.
 
     Parameters
@@ -557,11 +558,12 @@ def calculate_ordinate_z(
 
     return ordinate_z
 
+
 def calculate_ordinate_h(
-     absoluteH_absolute: float,
-     absoluteH_baseline:float,
-     ordinate_d:float,
-    ) -> float:
+    absoluteH_absolute: float,
+    absoluteH_baseline: float,
+    ordinate_d: float,
+) -> float:
     """Calculate ordinate_z.
 
     Parameters
@@ -576,6 +578,6 @@ def calculate_ordinate_h(
     """
     ordinate_e = absoluteH_absolute * np.sin(ordinate_d)
 
-    ordinate_h =  np.sqrt(absoluteH_absolute**2 - ordinate_e**2) - absoluteH_baseline
+    ordinate_h = np.sqrt(absoluteH_absolute**2 - ordinate_e**2) - absoluteH_baseline
 
-    return ordinate_h
\ No newline at end of file
+    return ordinate_h
diff --git a/geomagio/residual/Diagnostics.py b/geomagio/residual/Diagnostics.py
index 9634cd55a46914ab3b664e8694687038d0d7c55c..7844cb7b6b4dcc0ed1923b27c1404dd7a39330c7 100644
--- a/geomagio/residual/Diagnostics.py
+++ b/geomagio/residual/Diagnostics.py
@@ -40,5 +40,4 @@ class Diagnostics(BaseModel):
     ordinate_h: Optional[float] = None
     ordinate_z: Optional[float] = None
     r_computed: Optional[float] = None
-    scale_value: Optional[float] = None
     vertical_component: Optional[float] = None