Tide Gauge Details - Solomon Islands - Honiara

Device description

Name
Solomon Islands - Honiara
Country
Solomon Islands
Group
TD UNESCO
Lat/Lon
-9.4289 / 159.955505

Last measured values

Time(UTC)
30 Sep 2023 02:15:00
Latency
232828
Level
0.61

Harmonics

Points count
5357755
First date
11 Mar 2011 05:00
Last date
30 Sep 2023 02:15

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 8.63676E-1 0E+0
1 0.12877 -4.6727E-5 -1.65195E-4
2 0.12886 -2.57663E-4 -3.1377E-4
3 0.12938 5.15208E-5 -2.83266E-4
4 0.14707 -1.16605E-4 7.4365E-5
5 0.16841 4.82743E-4 -3.1621E-4
6 0.16857 -8.38296E-4 -5.12386E-4
7 0.17036 6.48239E-4 -2.90809E-4
8 0.17052 -1.59468E-3 -3.2315E-4
9 0.17251 1.0497E-4 8.13692E-4
10 0.17470 -3.01275E-4 -8.21214E-5
11 0.19989 1.24449E-3 4.13117E-4
12 0.20545 8.37073E-4 -2.39941E-4
13 0.24966 -8.68113E-4 1.12587E-3
14 0.25000 -1.5088E-4 -3.03868E-5
15 0.25395 6.16536E-4 2.05198E-3
16 0.25431 -4.73242E-7 -1.83572E-3
17 0.25631 2.33702E-4 -4.25495E-4
18 0.25667 -7.4267E-4 -1.36999E-4
19 0.25876 -4.02582E-3 3.04688E-4
20 0.26122 1.06701E-3 1.54875E-3
21 0.33303 -1.04364E-3 -2.65607E-3
22 0.34071 -2.06523E-3 4.84954E-4
23 0.34135 -1.06289E-3 5.41953E-4
24 0.34502 -2.86574E-3 -4.47168E-3
25 0.34943 5.57001E-4 -6.8988E-4
26 0.48977 -2.41118E-4 1.24312E-3
27 0.49109 6.04672E-4 1.57335E-3
28 0.49863 1.74908E-2 1.37464E-3
29 0.49932 -3.39475E-4 -1.59488E-3
30 0.50000 -6.753E-2 -2.77256E-2
31 0.50798 6.01044E-3 4.39428E-5
32 0.50924 -1.60941E-3 -3.75956E-3
33 0.51606 1.17781E-3 2.56634E-3
34 0.51679 -1.35057E-3 -9.43109E-5
35 0.51753 -1.79268E-2 4.73456E-2
36 0.51826 3.45285E-4 7.82713E-4
37 0.52608 -1.91948E-3 -1.83335E-3
38 0.52743 -6.2718E-3 1.05383E-2
39 0.53632 -4.18299E-3 -2.91895E-4
40 0.53772 2.33087E-3 1.22281E-4
41 0.54697 -6.4716E-4 1.75727E-3
42 0.54843 -1.34381E-4 4.08087E-4
43 0.89909 -8.94037E-4 -1.51359E-4
44 0.92942 4.89061E-3 -5.09179E-3
45 0.93417 -1.34511E-4 1.4466E-3
46 0.96244 -8.26439E-3 7.12283E-3
47 0.96696 5.23293E-4 2.45793E-3
48 0.99185 8.71098E-4 -2.29707E-3
49 0.99455 -5.318E-3 2.50585E-3
50 0.99727 1.54062E-1 1.42199E-1
51 1.00000 -1.60183E-3 6.75215E-3
52 1.00275 4.62154E-2 5.76724E-2
53 1.00551 5.68277E-3 8.08491E-3
54 1.02954 9.35759E-4 -1.15555E-4
55 1.03472 6.88957E-3 -5.30179E-3
56 1.04061 -1.41378E-3 -1.17996E-3
57 1.06951 4.01846E-3 -1.50304E-3
58 1.07581 8.30862E-2 -4.58158E-2
59 1.11346 1.68747E-3 -1.20797E-3
60 1.11951 -1.05229E-2 -1.37619E-2
61 1.16035 -2.56453E-4 -8.51403E-4
62 1.16693 -1.471E-3 1.9452E-3
63 1.21136 6.7144E-5 1.00692E-4
64 13.66079 -2.56221E-3 -4.80889E-3
65 14.76529 -8.64628E-3 -2.208E-3
66 27.55455 3.82491E-3 1.82868E-2
67 31.81193 -4.94811E-4 -1.21612E-3
68 182.62118 -6.74472E-2 -1.30778E-2
69 365.25998 1.32224E-1 -4.26667E-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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