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)
02 Oct 2023 16:57:00
Latency
2575
Level
0.28

Harmonics

Points count
4244873
First date
29 Apr 2011 19:11
Last date
02 Oct 2023 16:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.46541E-1 0E+0
1 0.12877 2.64394E-4 -1.2925E-4
2 0.12886 -2.95757E-5 6.20226E-5
3 0.12938 -2.58605E-4 3.03911E-4
4 0.14707 -4.04209E-5 1.46956E-4
5 0.16841 -2.31929E-4 -4.42905E-5
6 0.16857 2.01549E-4 -2.83298E-5
7 0.17036 -1.15356E-6 4.03378E-4
8 0.17052 -4.12309E-4 -1.10483E-3
9 0.17251 -1.69637E-3 -5.62731E-4
10 0.17470 2.73551E-4 2.17173E-4
11 0.19989 5.94287E-4 9.18475E-5
12 0.20545 -4.46989E-4 8.28486E-5
13 0.24966 -9.0905E-5 7.72975E-4
14 0.25000 4.33403E-4 5.36755E-4
15 0.25395 -1.58854E-4 -1.53384E-4
16 0.25431 -7.08168E-4 1.63316E-4
17 0.25631 -2.05456E-4 1.17147E-4
18 0.25667 2.37169E-4 3.4751E-4
19 0.25876 1.94079E-3 -3.22569E-3
20 0.26122 -2.14769E-3 5.03608E-4
21 0.33303 1.66441E-3 1.55492E-3
22 0.34071 -2.5711E-4 1.25218E-4
23 0.34135 -2.77266E-4 -1.00065E-4
24 0.34502 -1.9245E-3 3.89397E-3
25 0.34943 4.48406E-4 8.80076E-4
26 0.48977 9.03925E-4 4.4298E-4
27 0.49109 1.25696E-4 -7.40617E-4
28 0.49863 1.02677E-2 -8.86141E-3
29 0.49932 6.74824E-4 7.07836E-4
30 0.50000 -5.61148E-2 1.4674E-2
31 0.50798 4.4081E-3 3.43057E-3
32 0.50924 2.53181E-3 2.78376E-4
33 0.51606 -1.90636E-3 -1.1347E-4
34 0.51679 1.61346E-3 3.11184E-3
35 0.51753 -2.17154E-1 3.09523E-1
36 0.51826 -1.49903E-3 -4.35657E-3
37 0.52608 -1.5899E-2 1.51619E-2
38 0.52743 9.81408E-2 4.03806E-2
39 0.53632 1.5911E-2 9.60515E-3
40 0.53772 1.95265E-3 -1.64107E-2
41 0.54697 2.06044E-3 -4.25199E-3
42 0.54843 -2.71619E-3 -3.43834E-4
43 0.89909 5.66858E-7 -4.47227E-4
44 0.92942 1.11747E-3 -4.27561E-4
45 0.93417 2.76264E-4 1.35723E-3
46 0.96244 -1.36006E-3 1.13445E-4
47 0.96696 4.46659E-4 4.91359E-4
48 0.99185 9.86013E-5 -1.1129E-4
49 0.99455 2.92953E-4 -3.60423E-4
50 0.99727 8.51701E-3 3.97118E-2
51 1.00000 1.45429E-3 2.96724E-3
52 1.00275 1.66231E-3 1.18253E-2
53 1.00551 -8.7675E-4 8.56034E-4
54 1.02954 6.5648E-4 8.13788E-4
55 1.03472 1.07848E-3 -1.01525E-3
56 1.04061 -7.63058E-5 -3.06987E-4
57 1.06951 -3.10256E-4 5.36036E-4
58 1.07581 2.53763E-2 8.64014E-3
59 1.11346 9.08062E-4 -2.75252E-4
60 1.11951 1.13877E-3 -4.81E-3
61 1.16035 -5.79425E-5 -1.49296E-4
62 1.16693 -9.31222E-4 -1.00166E-4
63 1.21136 9.15175E-4 9.47878E-4
64 13.66079 2.02389E-3 -7.10172E-3
65 14.76529 -6.33258E-4 6.5989E-3
66 27.55455 1.1682E-2 5.45777E-4
67 31.81193 -1.32095E-2 1.08003E-2
68 182.62118 -1.31919E-2 -2.08129E-2
69 365.25998 -4.39168E-3 1.51513E-2
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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