World sea levels

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)
20 May 2024 20:57:00
Latency
1772
Level
0.23

Harmonics

Points count
4570802
First date
29 Apr 2011 19:11
Last date
20 May 2024 20:57

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 5.37012E-1 0E+0
1 0.12877 2.39175E-4 -7.50427E-5
2 0.12886 -4.79788E-5 1.73681E-5
3 0.12938 -1.9361E-4 2.1786E-4
4 0.14707 -5.85155E-5 1.04155E-4
5 0.16841 -1.98703E-4 -6.8331E-5
6 0.16857 1.86295E-4 -5.58133E-6
7 0.17036 -4.47342E-6 3.66141E-4
8 0.17052 -3.74184E-4 -1.01148E-3
9 0.17251 -1.41516E-3 -4.87945E-4
10 0.17470 1.73655E-4 2.0484E-4
11 0.19989 5.89453E-4 6.83357E-5
12 0.20545 -3.80559E-4 -1.34619E-5
13 0.24966 -7.76641E-5 7.56099E-4
14 0.25000 3.94573E-4 5.41987E-4
15 0.25395 -1.18115E-4 -2.08724E-4
16 0.25431 -7.57454E-4 2.32778E-4
17 0.25631 -2.14846E-4 1.41005E-4
18 0.25667 2.73599E-4 3.53335E-4
19 0.25876 1.94081E-3 -2.67434E-3
20 0.26122 -1.77622E-3 3.33848E-4
21 0.33303 1.65823E-3 1.54901E-3
22 0.34071 -1.4555E-4 1.19598E-4
23 0.34135 -2.39159E-4 -7.90847E-5
24 0.34502 -1.95337E-3 3.90048E-3
25 0.34943 4.8035E-4 7.76287E-4
26 0.48977 8.73762E-4 3.84731E-4
27 0.49109 8.06265E-5 -7.58098E-4
28 0.49863 1.08941E-2 -9.27535E-3
29 0.49932 6.23974E-4 3.59001E-4
30 0.50000 -5.68274E-2 1.49538E-2
31 0.50798 4.15267E-3 3.39712E-3
32 0.50924 2.60092E-3 1.70417E-4
33 0.51606 -2.14968E-3 1.69992E-5
34 0.51679 1.88193E-3 3.46812E-3
35 0.51753 -2.16204E-1 3.09124E-1
36 0.51826 -9.77348E-4 -5.10442E-3
37 0.52608 -1.56241E-2 1.49921E-2
38 0.52743 9.81308E-2 4.0435E-2
39 0.53632 1.60351E-2 9.77615E-3
40 0.53772 1.89919E-3 -1.6566E-2
41 0.54697 2.0759E-3 -4.3343E-3
42 0.54843 -2.71835E-3 -2.8748E-4
43 0.89909 2.41366E-5 -3.21959E-4
44 0.92942 1.07558E-3 -4.48948E-4
45 0.93417 2.49743E-4 1.36608E-3
46 0.96244 -1.49866E-3 2.16335E-4
47 0.96696 4.33584E-4 4.28173E-4
48 0.99185 9.75846E-5 -2.13219E-4
49 0.99455 3.58309E-4 4.88542E-5
50 0.99727 8.84774E-3 4.01838E-2
51 1.00000 1.62815E-3 2.9847E-3
52 1.00275 1.61883E-3 1.17828E-2
53 1.00551 -8.05253E-4 9.39599E-4
54 1.02954 6.4035E-4 9.06437E-4
55 1.03472 1.27128E-3 -1.21414E-3
56 1.04061 -2.66456E-5 -1.64358E-4
57 1.06951 -3.52619E-4 3.37474E-4
58 1.07581 2.58726E-2 8.67699E-3
59 1.11346 1.0031E-3 -1.72525E-4
60 1.11951 1.02736E-3 -4.97355E-3
61 1.16035 -6.83938E-5 -1.39232E-4
62 1.16693 -8.7909E-4 -8.27597E-5
63 1.21136 8.30546E-4 8.67908E-4
64 13.66079 1.8395E-3 -7.54919E-3
65 14.76529 -4.65196E-4 6.0466E-3
66 27.55455 1.1645E-2 1.24605E-3
67 31.81193 -1.20738E-2 1.00676E-2
68 182.62118 -9.11413E-3 -2.00134E-2
69 365.25998 -1.16953E-2 7.83438E-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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