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)
29 May 2025 04:48:00
Latency
5282
Level
4.17

Harmonics

Points count
6181961
First date
19 Sep 2011 11:45
Last date
29 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 2.62805E+0 0E+0
1 0.12877 -1.1135E-3 -6.60461E-4
2 0.12886 -1.09813E-3 1.36312E-3
3 0.12938 -4.65519E-4 5.23972E-4
4 0.14707 -4.90686E-4 -1.21523E-5
5 0.16841 -1.66568E-3 5.32332E-6
6 0.16857 -2.03354E-3 1.50588E-3
7 0.17036 1.44533E-3 5.07773E-4
8 0.17052 3.72309E-3 2.79094E-3
9 0.17251 1.76961E-3 -4.34167E-3
10 0.17470 -4.05386E-4 9.23473E-4
11 0.19989 -1.77766E-4 3.73315E-4
12 0.20545 2.72332E-3 1.04627E-3
13 0.24966 -2.32911E-3 1.38525E-3
14 0.25000 -3.25346E-3 1.40361E-3
15 0.25395 -1.12063E-3 1.53632E-3
16 0.25431 1.08726E-2 -1.60606E-3
17 0.25631 5.22219E-4 -2.28941E-4
18 0.25667 4.86038E-4 -5.69965E-4
19 0.25876 -2.11399E-2 -1.90761E-2
20 0.26122 -2.21302E-3 1.32585E-2
21 0.33303 -4.90782E-4 3.2226E-3
22 0.34071 3.41627E-3 -1.34091E-3
23 0.34135 3.58156E-3 -1.09097E-3
24 0.34502 5.84596E-3 1.05306E-2
25 0.34943 -4.50187E-4 -1.45344E-3
26 0.48977 1.03075E-2 3.57401E-3
27 0.49109 6.90006E-3 -2.57706E-3
28 0.49863 4.92696E-2 -1.11542E-1
29 0.49932 1.36757E-2 -7.0979E-3
30 0.50000 -2.89115E-1 3.68125E-1
31 0.50798 1.73318E-2 -2.32414E-2
32 0.50924 -1.62705E-3 -5.98806E-3
33 0.51606 7.38163E-3 -3.10971E-3
34 0.51679 -1.15463E-2 -1.12329E-2
35 0.51753 1.03992E+0 8.39506E-1
36 0.51826 -9.72446E-3 -6.51598E-4
37 0.52608 3.97657E-2 4.48701E-2
38 0.52743 1.23349E-1 -2.49126E-1
39 0.53632 2.32413E-2 -4.22458E-2
40 0.53772 -3.47768E-2 -8.55555E-3
41 0.54697 -8.60901E-3 -2.54537E-3
42 0.54843 2.6559E-5 5.13162E-3
43 0.89909 4.86993E-3 -3.88544E-4
44 0.92942 -6.45415E-4 2.09306E-3
45 0.93417 6.71638E-4 1.37773E-3
46 0.96244 2.74586E-3 -4.37767E-4
47 0.96696 -3.44674E-3 2.84053E-3
48 0.99185 -6.83097E-3 -2.99236E-3
49 0.99455 9.36515E-3 4.06894E-4
50 0.99727 1.7905E-2 5.35107E-2
51 1.00000 2.65785E-3 -3.29838E-3
52 1.00275 -3.59227E-4 2.0395E-2
53 1.00551 8.23042E-3 -1.3627E-3
54 1.02954 -9.44913E-3 -5.89299E-3
55 1.03472 1.51153E-2 -4.21134E-3
56 1.04061 1.15186E-2 -4.05377E-3
57 1.06951 1.3063E-2 7.45242E-3
58 1.07581 1.51336E-2 -6.56817E-2
59 1.11346 1.00457E-2 7.71175E-3
60 1.11951 -3.42422E-2 1.14788E-2
61 1.16035 -1.48802E-2 -8.22689E-3
62 1.16693 2.08325E-2 7.64809E-4
63 1.21136 1.2461E-2 8.71434E-3
64 13.66079 -1.17356E-1 3.27829E-2
65 14.76529 -1.09842E-1 5.2845E-2
66 27.55455 -1.24482E-1 -1.44813E-2
67 31.81193 1.07333E-1 -7.61884E-2
68 182.62118 1.17129E-1 2.34638E-2
69 365.25998 -1.06877E-1 -3.93402E-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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