Comparison of Simultaneous Observations
Comparison of Simultaneous Observations : A reduction process in which a short series of tide or tidal current observations at any place is compared with simultaneous observations at a control station where tidal or tidal current constants have previously been determined from a long series of observations. The observations are typically high and low tides and monthly means. For tides, it is usually used to adjust constants from a subordinate station to the equivalent value that would be obtained from a l9-year series. See: First Reduction, Standard Method, Modified-Range Ratio Method, And Direct Method