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Tide Gauge Details - USA - Pago_Pago_AS

Device description

Name
USA - Pago_Pago_AS
Country
USA
Group
TD UNESCO
Lat/Lon
-14.2766 / -170.690704

Last measured values

Time(UTC)
10 Oct 2024 06:57:00
Latency
1657
Level
0.35

Harmonics

Points count
4770221
First date
29 Apr 2011 19:11
Last date
10 Oct 2024 06:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.35109E-1 0E+0
1 0.12877 2.4127E-4 -6.8307E-5
2 0.12886 -5.24013E-5 2.39865E-5
3 0.12938 -1.69897E-4 1.95647E-4
4 0.14707 -6.40465E-5 8.889E-5
5 0.16841 -1.89395E-4 -8.47345E-5
6 0.16857 1.87945E-4 2.99104E-6
7 0.17036 -4.74172E-6 3.75932E-4
8 0.17052 -3.33343E-4 -9.96864E-4
9 0.17251 -1.37001E-3 -4.84427E-4
10 0.17470 1.7132E-4 1.79091E-4
11 0.19989 6.09066E-4 9.6838E-5
12 0.20545 -3.77151E-4 -3.45972E-5
13 0.24966 -7.51972E-5 7.53105E-4
14 0.25000 4.00703E-4 5.75455E-4
15 0.25395 -1.05587E-4 -2.24904E-4
16 0.25431 -7.72161E-4 2.17875E-4
17 0.25631 -1.92948E-4 1.40193E-4
18 0.25667 2.68453E-4 3.1487E-4
19 0.25876 1.97659E-3 -2.56372E-3
20 0.26122 -1.72797E-3 3.00745E-4
21 0.33303 1.68632E-3 1.5241E-3
22 0.34071 -1.43891E-4 1.11421E-4
23 0.34135 -1.96576E-4 -1.56258E-4
24 0.34502 -1.98447E-3 3.88433E-3
25 0.34943 5.0264E-4 7.19496E-4
26 0.48977 9.00383E-4 3.82175E-4
27 0.49109 1.08747E-4 -8.17916E-4
28 0.49863 1.09924E-2 -9.52888E-3
29 0.49932 7.07178E-4 5.39267E-4
30 0.50000 -5.68686E-2 1.49427E-2
31 0.50798 4.09609E-3 3.38549E-3
32 0.50924 2.49329E-3 1.53651E-4
33 0.51606 -2.02478E-3 -1.21482E-4
34 0.51679 1.57948E-3 3.90198E-3
35 0.51753 -2.16066E-1 3.08417E-1
36 0.51826 -8.17839E-4 -4.47904E-3
37 0.52608 -1.56509E-2 1.49485E-2
38 0.52743 9.82268E-2 4.04899E-2
39 0.53632 1.59692E-2 9.82167E-3
40 0.53772 2.04158E-3 -1.65273E-2
41 0.54697 2.04853E-3 -4.38976E-3
42 0.54843 -2.68707E-3 -2.58915E-4
43 0.89909 2.87113E-5 -2.47377E-4
44 0.92942 1.0866E-3 -4.92856E-4
45 0.93417 2.76666E-4 1.32029E-3
46 0.96244 -1.51541E-3 3.32379E-4
47 0.96696 4.13838E-4 5.18478E-4
48 0.99185 9.60627E-5 -1.51881E-4
49 0.99455 2.34609E-4 -2.43277E-4
50 0.99727 9.14279E-3 4.04993E-2
51 1.00000 1.3488E-3 2.80813E-3
52 1.00275 1.73626E-3 1.18637E-2
53 1.00551 -7.84351E-4 8.59283E-4
54 1.02954 6.14168E-4 9.1179E-4
55 1.03472 1.35697E-3 -1.23944E-3
56 1.04061 -1.4633E-4 -1.76998E-4
57 1.06951 -4.38717E-4 3.69623E-4
58 1.07581 2.61011E-2 8.81037E-3
59 1.11346 9.53214E-4 -1.67372E-4
60 1.11951 1.03157E-3 -4.91838E-3
61 1.16035 -1.32371E-4 -1.19878E-4
62 1.16693 -8.89028E-4 -1.71104E-5
63 1.21136 8.55204E-4 7.86982E-4
64 13.66079 1.2779E-3 -7.88285E-3
65 14.76529 -4.9451E-4 5.92142E-3
66 27.55455 1.07922E-2 1.33972E-3
67 31.81193 -1.1534E-2 9.36741E-3
68 182.62118 -9.45677E-3 -2.00994E-2
69 365.25998 -9.25062E-3 8.89978E-3
Mathematical Formula
Tide calculation mathematical formula
Visual Basic Syntax
Function EstimateTideValues() As [Function]
                        Dim Pi As [Double] = Math.PI
                        Dim sum As [Double] = harmonics(0, 1)
                        For k As Int16 = 1 To harmonics.GetUpperBound(0)
                        Dim period As [Double] = 2 * Pi / harmonics(k, 0)
                        Dim coefCos As [Double] = harmonics(k, 1)
                        Dim coefSin As [Double] = harmonics(k, 2) 
                        sum = sum + coefCos * Math.Cos(time * period)
                        sum = sum + coefSin * Math.Sin(time * period)
                        Next
                        Return sum
                        End Function
C# Syntax
double EstimateTideValues()
                        {
                        double Pi = Math.PI;
                        double sum = harmonics[0, 1];
                        for (int k=1; k <= harmonics.GetUpperBound(0); k++)
                        {
                        double period = 2 * Pi / harmonics[k, 0];
                        double coefCos = harmonics[k, 1];
                        double coefSin = harmonics[k, 2];
                        sum += coefCos * Math.Cos(time * period);
                        sum += coefSin * Math.Sin(time * period);
                        }
                        return sum;
                        }

Axis ranges

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