# Entering old data into StarNet

I have had success entering old field notes by Jim Conkright (from our files) into StarNet.

Most of the data is doubled-angles right and he closed the horizon. This latest project it looks like he used a 10″ theodolite (or maybe a total station, it is dated in 1984). He balanced the angles for example: 94-41-10, 189-22-10 =

__94-41-05__& 265-19-00, 170-38-10 =__265-19-05__,**M=94-41-00**(to make the angles add up to 360-00-00). I use his meaned angle. He also measured the distance in face 1 and face 2 and meaned it to a horizontal distance which is what I used. He didn’t measure HIs and THs so the best I can get is a 2D adjustment.I just have one issue I’m not sure what is the best way to handle it. Common practice was to set up on a centerline monument, backsight another then produce the line in the opposite direction. He doesn’t note how he did this, I assume he plunged the scope, maybe did a double center. StarNet doesn’t directly allow for this so I put the line in like this:

M 3-101-102 180-00-00 608.08 ! 0.01 ‘SetPK

I hold the 180 degree angle fixed but maybe I should let it float a little?I have the standard errors of the angles set at 20″, the statistical information looks like:

Adjustment Statistical Summary

==============================Iterations = 2

Number of Stations = 26

Number of Observations = 53

Number of Unknowns = 50

Number of Redundant Obs = 3Observation Count Sum Squares Error

of StdRes Factor

Angles 26 2.941 1.414

Distances 26 0.464 0.561

Az/Bearings 1 0.000 0.000Total 53 3.405 1.065

The Chi-Square Test at 5.00% Level Passed

Lower/Upper Bounds (0.268/1.765)

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