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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)
27 Jul 2024 04:57:00
Latency
4287
Level
0.13

Harmonics

Points count
4665483
First date
29 Apr 2011 19:11
Last date
27 Jul 2024 04:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.36047E-1 0E+0
1 0.12877 2.34155E-4 -7.33187E-5
2 0.12886 -4.51254E-5 1.84303E-5
3 0.12938 -1.88125E-4 2.07329E-4
4 0.14707 -6.1575E-5 9.30573E-5
5 0.16841 -1.97337E-4 -6.80799E-5
6 0.16857 1.91532E-4 -2.9927E-6
7 0.17036 1.37213E-5 3.7287E-4
8 0.17052 -3.53716E-4 -9.97665E-4
9 0.17251 -1.38171E-3 -4.89781E-4
10 0.17470 1.65805E-4 1.90455E-4
11 0.19989 6.0877E-4 7.65475E-5
12 0.20545 -3.77146E-4 -1.87394E-5
13 0.24966 -6.35689E-5 7.67244E-4
14 0.25000 4.11028E-4 5.68802E-4
15 0.25395 -1.25411E-4 -2.18054E-4
16 0.25431 -7.59004E-4 2.3154E-4
17 0.25631 -2.04354E-4 1.27805E-4
18 0.25667 2.84746E-4 3.49066E-4
19 0.25876 1.95602E-3 -2.61737E-3
20 0.26122 -1.74432E-3 3.22706E-4
21 0.33303 1.70506E-3 1.54193E-3
22 0.34071 -1.36141E-4 8.79318E-5
23 0.34135 -2.22581E-4 -1.0488E-4
24 0.34502 -1.94137E-3 3.89642E-3
25 0.34943 5.03886E-4 7.64361E-4
26 0.48977 9.05642E-4 3.47555E-4
27 0.49109 9.78562E-5 -7.71825E-4
28 0.49863 1.0935E-2 -9.35018E-3
29 0.49932 5.69156E-4 4.50598E-4
30 0.50000 -5.67805E-2 1.48652E-2
31 0.50798 4.12929E-3 3.40778E-3
32 0.50924 2.54728E-3 1.13747E-4
33 0.51606 -2.19565E-3 -3.0459E-4
34 0.51679 1.90093E-3 3.83325E-3
35 0.51753 -2.16193E-1 3.0877E-1
36 0.51826 -1.02299E-3 -4.77775E-3
37 0.52608 -1.56042E-2 1.4961E-2
38 0.52743 9.82234E-2 4.04529E-2
39 0.53632 1.60257E-2 9.72376E-3
40 0.53772 1.95415E-3 -1.65914E-2
41 0.54697 2.08743E-3 -4.36582E-3
42 0.54843 -2.68292E-3 -2.86583E-4
43 0.89909 3.81781E-5 -2.8678E-4
44 0.92942 1.09338E-3 -4.76309E-4
45 0.93417 2.5154E-4 1.3608E-3
46 0.96244 -1.48647E-3 2.83585E-4
47 0.96696 3.91378E-4 4.55185E-4
48 0.99185 2.61853E-4 -1.38124E-4
49 0.99455 1.66375E-4 -7.78384E-5
50 0.99727 9.02191E-3 4.03688E-2
51 1.00000 1.50292E-3 2.77383E-3
52 1.00275 1.69728E-3 1.19847E-2
53 1.00551 -8.22318E-4 7.75974E-4
54 1.02954 6.36214E-4 8.77008E-4
55 1.03472 1.28959E-3 -1.22223E-3
56 1.04061 -3.86762E-5 -1.68875E-4
57 1.06951 -2.88638E-4 3.42806E-4
58 1.07581 2.59334E-2 8.72872E-3
59 1.11346 1.01014E-3 -1.47595E-4
60 1.11951 1.01722E-3 -4.94421E-3
61 1.16035 -8.10892E-5 -1.28749E-4
62 1.16693 -8.8758E-4 -8.66334E-5
63 1.21136 7.9904E-4 8.42733E-4
64 13.66079 1.61247E-3 -7.76043E-3
65 14.76529 -5.32266E-4 5.75036E-3
66 27.55455 1.08519E-2 1.00767E-3
67 31.81193 -1.19139E-2 9.35852E-3
68 182.62118 -1.05038E-2 -1.92179E-2
69 365.25998 -9.91329E-3 7.2953E-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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