In surveying, stadia readings are obtained using a stadia rod and instrument. One of the stadia readings in the data was improperly recorded.
The improperly recorded stadia reading
In surveying, a stadia rod is used to measure distances and elevations. To record a stadia reading, the surveyor uses a stadia instrument, such as a total station or a theodolite, to observe two horizontal crosshairs on the stadia rod. These crosshairs are labeled as the stadia hairs.
The surveyor notes down the reading on the stadia rod at the point where the lower stadia hair intersects the rod, known as the stadia reading. However, one of the stadia readings in the data was improperly recorded.
Example:
Let's say the surveyor obtains the following stadia readings for a particular point: 2.50m, 3.00m, 2.75m, 3.25m. The surveyor compares these readings with the known distances and elevations to check for accuracy. If one of the readings deviates significantly from the expected value, it may indicate an improperly recorded stadia reading.
The probable question may be:
Which specific stadia reading in the survey data deviated significantly from the expected value, indicating a potential recording error?