For a description of the data collection procedures and precision, see:
Savage, J.C., and W.H. Prescott, Precision of Geodolite distance measurements
for determining fault movements, Journal of Geophysical Research, 78, 6001-6008, 1973.
Geodolite Positions
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Sample
anza arling a 33 52 16.842 -117 28 14.350 d 564.00 aa 'arling 1974' NCER
anza arling80 n 33 52 17.000 -117 28 14.000 n 564.00 aa 'arling l980' USGS
anza asbesrm1 n 33 37 39.000 -116 27 29.000 n 1600.20 hh 'asbestos no 1 l939' USCGS
anza asbestos a 33 37 39.304 -116 27 29.872 a 1604.80 bb 'asbestos l939' USCGS
anza bachelor a 33 36 19.504 -117 03 41.192 a 780.00 bb 'bachelor 1939' USCGS
Geodolite Line Lengths
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Sample
anza asbestos laquinta 871211 1434 58.1 16061.7423 + 16012.7427 0.0002 red 16053.466 0.471 251.098 290.68 904.22 7.55 + 383.40 0.477 1.756 7600 7601 kc g sn104 1604.80 -.048 1.485 h ef 2 352 545 545 85 2
anza asbestos laquinta 881116 1417 58.1 16061.7374 + 16012.7378 0.0011 red 16055.094 2.006 257.039 285.22 907.79 4.09 + 1604.80 0.475 1.500 7595 wk/g sn124 383.40 -.048 1.805 /h if 1 164 415 555 80 2
anza asbestos laquinta 91 5 3 0855 58.1 16061.7431 + 16012.7435 0.0030 red 16055.101 2.008 256.771 283.60 902.28 4.51 + 1604.80 0.477 1.440 7601 wk/g sn104 383.40 -.048 1.625 /h if 1 164 535 515 100 3
anza asbestos lookout 811112 1200 232.4 13488.1455 + 13484.2831 13487.513 0.438 233.802 289.41 836.83 4.53 + 1704.00 0.477 1.230 2198 6950 monr sn104 1604.80 -.026 1.480 4093 oe s af 2 c a1 76 90 2 13488.1448
anza bachelor elsinore 74 212 269.3 26086.1850 + 26080.5419 26085.665 0.471 259.029 284.20 909.95 5.76 + 1090.00 1.480 1.270 ziag sn104 780.00 0.000 1.716 os 2 71 64 105 2 26086.1880
anza bachelor elsinore 75 5 2 269.3 26086.1997 + 26080.5565 26085.493 0.489 250.975 292.92 909.41 9.65 + 1090.00 1.476 1.357 cb/g sn104 780.00 0.000 1.410 m 2 72 14 100 2 26086.2014
Position Column Descriptions
Columns
Contents
1-5
Network name
7-14
Station name
18
Source of coordinates (see codes at end of file)
20-21
Latitude degrees (north positive)
26-31
Latitude minutes
23-24
Latitude seconds
34-37
Longitude degrees (east positive)
39-40
Longitude minutes
42-47
Longitude seconds
53
Source of elevation (see codes at end of file)
55-61
Elevation (m)
65-66
Type of center mark (see codes at end of file)
68-80
Information stamped on monument
Line Lengths Column Descriptions
Columns
Contents
1-5
Network name
7-14
Station 1 name
16-23
Station 2 name
25-26
Year (2-digit, always in 1900s)
27-28
Month
29-30
Day of month
32-35
Time (hhmm)
37-41
Azimuth (clockwise from north, decimal degrees)
43-53
Mark-to-mark distance (m)
55
Reduction code (+=latitude properly accounted for in pressure
reduction, /=latitude was ignored)
56-66
Distance on Clarke spheriod (m)
68-74
Standard deviation (m)
76-80
Code ([blank]=geodolite, red=reduced [from an eccentric],
g8=geodimeter)
Note: the casual user can ignore the remaining columns
83-91
Mean ranging (m)
93-97
Mean offset (m)
99-105
Mean index of refraction
107-112
Mean air temperature (degrees K)
114-120
Mean air pressure (mb)
122-126
Mean vapor pressure (mb)
128
Original reduction code ([blank] or $)
130-136
Correction to convert [blank] or $ to / (m)
138-144
Elevation of Station 1 (m)
146-150
Instrument constant (m)
152-156
Instrument Height 1 (m)
158-156
Instrument digiquartz #1 id
163-166
Instrument digiquartz #2 id
169-172
Instrument operator
163-166
Instrument id
182-188
Elevation of Station 2 (m)
190-194
Reflector constant (m)
196-200
Reflector Height 1 (m)
202-205
Reflector digiquartz #1 id
207-210
Reflector digiquartz #2 id
213-216
Reflector operator
218-223
Reflector id
224
Processing direction (1=Sta 1 to Sta 2, 2=Sta2 to Sta1)
226-229
Aircraft recorder id
231-233
Probe 1 id
235-237
Probe 2 id
239-241
Airspeed (knots)
242-243
Number of aircraft passes
245-255
Old arc distance using Bomford refractivity
