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When using the procedure
SAS 3
for the adjustment of hourly observations the result of the comparison show
that the value of triple standard error was not surpassed by made observations.
For point GMX2 the accuracy comparison was carried out only with consideration of coordinate difference.
The coordinate difference was made between coordinates gained by hourly and daily observations. The
coordinate difference defines an interval inside which the values of hourly observations can be expected
respectively to daily observations. The accuracy comparisons made for points GMX3 and GMX4 have
shown that hourly interval observations are by its precision comparable to those made in daily intervals.
Also, the adjusted hourly coordinates are comparable to more accurate daily ones. An anomaly occurs at
point GMX3, when the adjustment of hourly observations is made by procedure
SAS 3
where the
correlations between triplets are taken into account. In this case the match with the classical theory of errors
is not achieved only at value 1. The observations made at point GMX4 are the most accurate of all. The
number of observations not following the classical theory of errors is minimal in this case. High accuracy of
hourly observations is achieved respectively to daily observations regardless of the chosen adjustment
procedure. Observations made at points GMX3 and GMX4 are from position of classical theory of errors
accurate enough to suffice even the most accurate observations where the maximal error must not exceed
twice the size of mean square error.
REFERENCES
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