World sea levels

Tide Gauge Details - UK - Gough Island

Device description

Name
UK - Gough Island
Country
UK
Group
TD UNESCO
Lat/Lon
-40.349442 / -9.8803

Last measured values

Time(UTC)
12 Nov 2019 23:49:00
Latency
172996950
Level
0

Harmonics

Points count
284598
First date
16 Jun 2015 08:58
Last date
11 Nov 2019 03:01

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 2.31964E+0 0E+0
1 0.12877 -1.12551E-3 3.04061E-3
2 0.12886 -2.41866E-3 -2.64651E-3
3 0.12938 -1.5745E-3 -1.95432E-3
4 0.14707 -4.68096E-3 2.03346E-3
5 0.16841 5.63541E-3 -1.85917E-3
6 0.16857 3.39677E-4 1.94846E-3
7 0.17036 -1.70667E-3 2.21412E-3
8 0.17052 6.82538E-4 -1.49122E-3
9 0.17251 4.89498E-3 -1.34765E-3
10 0.17470 -6.94651E-3 -6.84788E-5
11 0.19989 9.41421E-5 3.76649E-3
12 0.20545 1.56978E-3 5.30369E-3
13 0.24966 -3.5505E-3 -7.64095E-3
14 0.25000 6.41401E-3 4.97449E-4
15 0.25395 7.43205E-3 -9.46087E-3
16 0.25431 5.55234E-3 7.62962E-3
17 0.25631 6.8901E-3 1.89022E-3
18 0.25667 -4.4762E-4 4.83496E-3
19 0.25876 -3.15347E-3 -1.52979E-4
20 0.26122 1.01119E-3 7.02037E-3
21 0.33303 1.25861E-2 2.60499E-3
22 0.34071 4.68168E-4 -1.94973E-4
23 0.34135 -5.71362E-5 1.87302E-3
24 0.34502 -5.02919E-3 -5.40841E-4
25 0.34943 5.29371E-3 3.30028E-3
26 0.48977 1.47978E-3 7.30585E-4
27 0.49109 -9.48159E-3 7.32391E-3
28 0.49863 -2.58104E-2 -1.44215E-2
29 0.49932 3.27903E-3 -2.81883E-3
30 0.50000 1.11683E-1 5.15128E-2
31 0.50798 -4.45409E-3 -1.7485E-2
32 0.50924 4.36956E-3 1.94974E-2
33 0.51606 2.682E-2 -2.76226E-3
34 0.51679 1.16159E-2 8.20254E-3
35 0.51753 1.63378E-1 -1.96727E-1
36 0.51826 -1.91727E-3 -1.64266E-2
37 0.52608 1.74067E-2 -1.01226E-2
38 0.52743 -4.94446E-2 -2.65375E-2
39 0.53632 -1.8639E-2 -9.53785E-3
40 0.53772 6.2312E-4 1.05637E-2
41 0.54697 4.25875E-4 1.34246E-2
42 0.54843 -1.25877E-3 -8.76932E-4
43 0.89909 7.49876E-3 -1.18884E-2
44 0.92942 2.45022E-5 2.99622E-2
45 0.93417 -2.22945E-2 -1.67796E-3
46 0.96244 -5.48658E-3 -3.22917E-3
47 0.96696 4.77495E-4 -7.0047E-3
48 0.99185 4.90747E-3 -1.18831E-2
49 0.99455 3.14408E-2 4.55112E-3
50 0.99727 1.25332E-3 3.39074E-2
51 1.00000 -2.50442E-2 2.98609E-2
52 1.00275 -4.09326E-2 2.67068E-3
53 1.00551 -7.43632E-3 -3.99187E-2
54 1.02954 1.82399E-3 2.81323E-2
55 1.03472 -2.59533E-2 -3.10155E-2
56 1.04061 2.97007E-2 -1.28241E-2
57 1.06951 -1.99814E-2 -5.67583E-3
58 1.07581 1.42029E-2 -1.4595E-2
59 1.11346 9.60207E-3 -1.55464E-4
60 1.11951 -4.81021E-3 4.22051E-3
61 1.16035 6.21291E-3 -5.71975E-4
62 1.16693 -8.41408E-3 6.09649E-3
63 1.21136 -6.36343E-3 -2.4174E-2
64 13.66079 -1.53803E-1 -6.29757E-2
65 14.76529 1.58867E-1 -6.89323E-2
66 27.55455 -1.13782E-1 1.50045E-1
67 31.81193 7.42126E-2 -2.64756E-1
68 182.62118 -3.87096E-1 -4.26518E-1
69 365.25998 2.52322E-1 -2.62253E-1
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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