2.11 Angles

Observed angles are expressed with the following attributes of an empty-element tag <angle />

• from = "…" standpoint identification (optional)
• bs = "…" backsight target identification
• fs = "…" foresight target identification
• val = "…" observed angle; see section Angular units
• stdev = "…" standard deviation (optional)
• from_dh = "…" instrument height (optional)
• bs_dh = "…" backsight reflector/target height (optional)
• fs_dh = "…" foresight reflector/target height (optional)

Similar to distance observations, one observation set may group angles observed from several standpoints.

Example

<angle from="433" bs="422" fs="402" val="128.6548" stdev="14.1"/>
<angle from="433" bs="422" fs="402" val="128.6548" />
<angle bs="422" fs="402" val="128.6548" stdev="14.1"/>
<angle bs="422" fs="402" val="128.6548"/>

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