World sea levels

Tide Gauge Details - France - Socoa2

Device description

Name
France - Socoa2
Country
France
Group
TD UNESCO
Lat/Lon
43.395199 / -1.68162

Last measured values

Time(UTC)
28 May 2025 04:48:00
Latency
3640
Level
4.16

Harmonics

Points count
6180573
First date
19 Sep 2011 11:45
Last date
28 May 2025 04:48

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 2.62815E+0 0E+0
1 0.12877 -1.10622E-3 -6.79658E-4
2 0.12886 -1.07812E-3 1.35939E-3
3 0.12938 -4.46716E-4 5.3452E-4
4 0.14707 -4.86086E-4 -3.52808E-6
5 0.16841 -1.67839E-3 1.50857E-5
6 0.16857 -2.04874E-3 1.50039E-3
7 0.17036 1.45812E-3 5.19922E-4
8 0.17052 3.718E-3 2.8082E-3
9 0.17251 1.78873E-3 -4.33785E-3
10 0.17470 -4.09916E-4 9.43789E-4
11 0.19989 -1.75673E-4 3.64485E-4
12 0.20545 2.71311E-3 1.0601E-3
13 0.24966 -2.34186E-3 1.38084E-3
14 0.25000 -3.25504E-3 1.3905E-3
15 0.25395 -1.12104E-3 1.54527E-3
16 0.25431 1.08648E-2 -1.60243E-3
17 0.25631 5.26398E-4 -2.33927E-4
18 0.25667 4.9213E-4 -5.69445E-4
19 0.25876 -2.11352E-2 -1.90739E-2
20 0.26122 -2.21704E-3 1.3255E-2
21 0.33303 -5.03859E-4 3.21606E-3
22 0.34071 3.40861E-3 -1.31904E-3
23 0.34135 3.55806E-3 -1.08686E-3
24 0.34502 5.84765E-3 1.05032E-2
25 0.34943 -4.43997E-4 -1.42169E-3
26 0.48977 1.02693E-2 3.52872E-3
27 0.49109 6.92086E-3 -2.63219E-3
28 0.49863 4.92568E-2 -1.11489E-1
29 0.49932 1.3709E-2 -7.14027E-3
30 0.50000 -2.89166E-1 3.68142E-1
31 0.50798 1.72865E-2 -2.32639E-2
32 0.50924 -1.58468E-3 -5.96113E-3
33 0.51606 7.42703E-3 -3.09891E-3
34 0.51679 -1.15796E-2 -1.1264E-2
35 0.51753 1.03993E+0 8.39549E-1
36 0.51826 -9.70843E-3 -6.94254E-4
37 0.52608 3.97456E-2 4.49066E-2
38 0.52743 1.23374E-1 -2.49158E-1
39 0.53632 2.32787E-2 -4.225E-2
40 0.53772 -3.48134E-2 -8.5549E-3
41 0.54697 -8.6318E-3 -2.56871E-3
42 0.54843 4.49644E-5 5.15828E-3
43 0.89909 4.89641E-3 -4.03489E-4
44 0.92942 -6.72597E-4 2.08683E-3
45 0.93417 6.63517E-4 1.35106E-3
46 0.96244 2.75414E-3 -4.61871E-4
47 0.96696 -3.4563E-3 2.86393E-3
48 0.99185 -6.82884E-3 -2.9687E-3
49 0.99455 9.37364E-3 3.85067E-4
50 0.99727 1.7887E-2 5.35241E-2
51 1.00000 2.68062E-3 -3.29913E-3
52 1.00275 -3.80005E-4 2.03861E-2
53 1.00551 8.24324E-3 -1.34367E-3
54 1.02954 -9.47198E-3 -5.8896E-3
55 1.03472 1.5138E-2 -4.21186E-3
56 1.04061 1.1531E-2 -4.03471E-3
57 1.06951 1.30848E-2 7.46213E-3
58 1.07581 1.51367E-2 -6.56578E-2
59 1.11346 1.0036E-2 7.73661E-3
60 1.11951 -3.42304E-2 1.14548E-2
61 1.16035 -1.48545E-2 -8.24336E-3
62 1.16693 2.08039E-2 7.79355E-4
63 1.21136 1.24238E-2 8.71162E-3
64 13.66079 -1.17191E-1 3.28804E-2
65 14.76529 -1.09845E-1 5.30359E-2
66 27.55455 -1.24609E-1 -1.43433E-2
67 31.81193 1.07478E-1 -7.63113E-2
68 182.62118 1.1722E-1 2.32964E-2
69 365.25998 -1.07032E-1 -3.92367E-2
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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