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 Dec 2022 21:57:00
Latency
2788
Level
0.22

Harmonics

Points count
3814866
First date
29 Apr 2011 19:11
Last date
02 Dec 2022 19:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.51547E-1 0E+0
1 0.12877 2.88275E-4 -2.01437E-4
2 0.12886 -8.13801E-5 8.48472E-5
3 0.12938 -3.44091E-4 3.14602E-4
4 0.14707 -6.91789E-5 2.00342E-4
5 0.16841 -2.25583E-4 -1.99752E-5
6 0.16857 2.34455E-4 -5.60173E-5
7 0.17036 -1.41311E-5 4.49501E-4
8 0.17052 -4.36296E-4 -1.18015E-3
9 0.17251 -1.91157E-3 -6.82087E-4
10 0.17470 2.88401E-4 2.92596E-4
11 0.19989 5.56888E-4 6.88623E-5
12 0.20545 -5.07632E-4 1.7323E-4
13 0.24966 -1.29047E-4 7.74262E-4
14 0.25000 4.08096E-4 5.25937E-4
15 0.25395 -1.83146E-4 -5.25518E-5
16 0.25431 -5.37427E-4 2.15734E-5
17 0.25631 -7.45679E-5 1.22891E-4
18 0.25667 2.34006E-4 2.71683E-4
19 0.25876 1.83526E-3 -3.58452E-3
20 0.26122 -2.36251E-3 6.13134E-4
21 0.33303 1.63413E-3 1.44666E-3
22 0.34071 -3.56428E-4 9.48591E-5
23 0.34135 -3.54095E-4 -4.50961E-5
24 0.34502 -1.89588E-3 3.92133E-3
25 0.34943 3.5579E-4 9.10789E-4
26 0.48977 8.46481E-4 4.91884E-4
27 0.49109 9.47707E-5 -6.45342E-4
28 0.49863 9.64328E-3 -8.5328E-3
29 0.49932 1.06351E-3 1.1677E-3
30 0.50000 -5.585E-2 1.46805E-2
31 0.50798 4.38073E-3 3.36325E-3
32 0.50924 2.67042E-3 4.65595E-4
33 0.51606 -2.55445E-3 3.00728E-4
34 0.51679 1.5024E-3 3.27746E-3
35 0.51753 -2.16643E-1 3.10866E-1
36 0.51826 -1.1492E-3 -4.9129E-3
37 0.52608 -1.6046E-2 1.53449E-2
38 0.52743 9.8323E-2 4.02886E-2
39 0.53632 1.59509E-2 9.55901E-3
40 0.53772 1.9178E-3 -1.65105E-2
41 0.54697 2.14983E-3 -4.17938E-3
42 0.54843 -2.77771E-3 -4.26252E-4
43 0.89909 -1.02104E-4 -6.35549E-4
44 0.92942 1.19459E-3 -4.16054E-4
45 0.93417 3.12275E-4 1.51133E-3
46 0.96244 -1.26682E-3 2.50902E-5
47 0.96696 4.07679E-4 5.36093E-4
48 0.99185 1.69589E-4 -1.72638E-4
49 0.99455 3.92337E-4 -3.03022E-4
50 0.99727 8.06794E-3 3.88461E-2
51 1.00000 1.36481E-3 3.13598E-3
52 1.00275 1.39098E-3 1.17645E-2
53 1.00551 -1.08297E-3 6.15273E-4
54 1.02954 7.01732E-4 7.41439E-4
55 1.03472 9.38947E-4 -8.81349E-4
56 1.04061 -1.35557E-5 -2.03852E-4
57 1.06951 -1.95359E-4 4.96316E-4
58 1.07581 2.44933E-2 8.45088E-3
59 1.11346 9.05551E-4 -3.79796E-4
60 1.11951 1.34621E-3 -4.70927E-3
61 1.16035 2.58301E-5 -1.78238E-4
62 1.16693 -9.50862E-4 -2.69667E-4
63 1.21136 1.03587E-3 9.9904E-4
64 13.66079 2.75526E-3 -6.62525E-3
65 14.76529 -4.94204E-4 7.69852E-3
66 27.55455 1.28285E-2 -2.4817E-4
67 31.81193 -1.46726E-2 1.20862E-2
68 182.62118 -1.26232E-2 -2.02131E-2
69 365.25998 -4.08526E-3 1.80634E-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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