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 Apr 2023 06:57:00
Latency
5306
Level
0.53

Harmonics

Points count
3984808
First date
29 Apr 2011 19:11
Last date
02 Apr 2023 04:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.49273E-1 0E+0
1 0.12877 2.76249E-4 -1.79111E-4
2 0.12886 -5.90704E-5 9.03972E-5
3 0.12938 -3.08277E-4 3.04931E-4
4 0.14707 -6.05128E-5 1.75626E-4
5 0.16841 -2.17806E-4 -4.15016E-5
6 0.16857 2.11515E-4 -5.63351E-5
7 0.17036 -2.64764E-5 4.63418E-4
8 0.17052 -4.01787E-4 -1.14257E-3
9 0.17251 -1.8207E-3 -6.12612E-4
10 0.17470 2.62604E-4 2.75357E-4
11 0.19989 5.4492E-4 7.6704E-5
12 0.20545 -4.57768E-4 1.54599E-4
13 0.24966 -1.24416E-4 7.47547E-4
14 0.25000 3.85057E-4 5.0324E-4
15 0.25395 -1.80899E-4 -9.23263E-5
16 0.25431 -6.4368E-4 7.01259E-5
17 0.25631 -1.12414E-4 1.59299E-4
18 0.25667 2.55823E-4 2.93461E-4
19 0.25876 1.89826E-3 -3.44654E-3
20 0.26122 -2.2601E-3 5.65994E-4
21 0.33303 1.61103E-3 1.53236E-3
22 0.34071 -3.17154E-4 1.42276E-4
23 0.34135 -3.48303E-4 -7.89434E-5
24 0.34502 -1.87808E-3 3.87209E-3
25 0.34943 4.03126E-4 8.66251E-4
26 0.48977 8.57613E-4 4.67924E-4
27 0.49109 1.06475E-4 -6.84747E-4
28 0.49863 9.93195E-3 -8.78937E-3
29 0.49932 9.58321E-4 7.87957E-4
30 0.50000 -5.61903E-2 1.45325E-2
31 0.50798 4.43308E-3 3.40943E-3
32 0.50924 2.55956E-3 3.43103E-4
33 0.51606 -2.14857E-3 1.26134E-4
34 0.51679 1.64271E-3 2.64416E-3
35 0.51753 -2.16971E-1 3.10282E-1
36 0.51826 -1.57823E-3 -5.06381E-3
37 0.52608 -1.59825E-2 1.52941E-2
38 0.52743 9.83375E-2 4.03072E-2
39 0.53632 1.60147E-2 9.62776E-3
40 0.53772 1.9147E-3 -1.6478E-2
41 0.54697 2.13576E-3 -4.19394E-3
42 0.54843 -2.79144E-3 -3.70581E-4
43 0.89909 -8.50507E-5 -5.79203E-4
44 0.92942 1.16651E-3 -4.21821E-4
45 0.93417 2.90598E-4 1.49865E-3
46 0.96244 -1.32433E-3 -3.51789E-5
47 0.96696 4.04585E-4 5.76443E-4
48 0.99185 1.12579E-4 -8.451E-5
49 0.99455 4.13242E-4 -2.85201E-5
50 0.99727 8.26125E-3 3.91546E-2
51 1.00000 1.6566E-3 3.34504E-3
52 1.00275 1.61968E-3 1.18374E-2
53 1.00551 -9.61961E-4 6.89687E-4
54 1.02954 6.74576E-4 8.85369E-4
55 1.03472 9.54299E-4 -9.43112E-4
56 1.04061 -6.72437E-5 -2.33042E-4
57 1.06951 -2.28604E-4 5.54706E-4
58 1.07581 2.48821E-2 8.54753E-3
59 1.11346 9.34868E-4 -3.27508E-4
60 1.11951 1.26353E-3 -4.75642E-3
61 1.16035 4.27103E-5 -1.89674E-4
62 1.16693 -9.10624E-4 -2.26849E-4
63 1.21136 9.89772E-4 9.98538E-4
64 13.66079 2.44322E-3 -6.89207E-3
65 14.76529 -7.01554E-4 7.37995E-3
66 27.55455 1.24877E-2 4.40803E-4
67 31.81193 -1.39134E-2 1.15206E-2
68 182.62118 -1.37892E-2 -2.21237E-2
69 365.25998 -7.54178E-3 1.6249E-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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