*TB 43-177
signify a good run as opposed to a bad run. If the
c. Computation of Deviations (Table B-2). The
deviations or standard deviation exceed 0.3 V, the run
deviations of a single observation are computed and the
2
16 deviations are then squared and summed, (DEV) ,
is usually suspected and a new run is made (optional for
the sum is then utilized to compute the standard
surveillance).
deviation of a single observation (appendix B, paragraph
Table B-2. Computation of Deviations
∆Vp
(Corr-D)-( ∆Vp)-(P)
DEV (V)
Observation
EKFL
EKFR
1
1.01803374
1.01802962
4.12
(4.325)-(4.12)-(.22)
-0.02
2
1.01803450
1.01802962
4.88
(5.095)-(4.88)-(.22)
-0.01
3
1.01803450
1.01802174
12.76
(12.995)-(12.76)-(.22)
+0.02
4
1.01803294
1.01802174
11.20
(11.435)-(11.20)-(.22)
+0.02
5
1.01803294
1.01802134
11.60
(11.825)-(11.60)-(.22)
+0.01
6
1.01803483
1.01802134
13.49
(13.725)-(13.49)-(.22)
+0.02
7
1.01803483
1.01802194
12.89
(13.115)-(12.89)-(.22)
+0.01
8
1.01803374
1.01802194
11.80
(12.025)-(11.80)-(.22)
+0.01
9
1.01802962
1.01803294
-3.32
(-3.115)-(-3.32)-(.22)
-0.02
10
1.01802962
1.01803483
-5.21
(-5.025)-(-5.21)-(.22)
-0.04
11
1.01802174
1.01803483
-13.09
(-12.855)-(-13.09)-(.22)
+0.02
12
1.01802174
1.01803374
-12.00
(-11.805)-(-12.00)-(.22)
-0.03
13
1.01802134
1.01803374
-12.40
(-12.185)-(-12.40)-(.22)
-0.01
14
1.01802134
1.01803450
-13.16
(-12.955)-(-13.16)-(.22)
-0.02
15
1.01802194
1.01803450
-12.56
(-12.355)-(-12.56)-(.22)
-0.02
16
1.01802194
1.01803294
-11.00
(-10.785)-(-11.00)-(.22)
-0.01
NOTE
d. Computation of Standard Deviation of a
Paragraphs c and d above are
Single Observation
provided only for facilities that
2
Σ(DEV)
calibrate standard cells.
These
Sx =
computations need not be performed
N-M
during surveillance of ACF standard
=
.0063
cells.
8
e.
Computation of Residual EMF
Σobs-D
P=
16
NOTE
Values may vary slightly from the
.216V
P = 3.46 =
computer analysis due to rounding of
16
numbers.
B-6
