2009.1.6 Database of Winds and Waves -internet version- http://www.nmri.go.jp/wavedb/wave2.html National Maritime Research Institute
CONTENTS 1. Outline of the Database... 1 2. Use of the Database on the Homepage... 3 2.1 The Database of Winds and Waves of the North Pacific... 3 2.2 The Database of Wave Height of World Oceans... 11 3. Use of the Database of Winds and Waves of the North Pacific by Downloading... 13 3.1 How to Download... 13 3.2 Operation Guides... 15 4. Contact address... 18 5. Technical Notes... 19
1. Outline of the Database The Database of Winds and Waves -internet version- enables PC users to access the database of winds and waves, which was constructed on an EWS. Although the original PC version was designed to be used by Lotus-123 macro program and was distributed by floppy disks, the software has been converted to MS-EXCEL and JAVA. World wave height distribution tables have also been added to the original one. The distribution and service are now provided via internet. Data which can be used in the database comprises two categories, i.e., scatter diagrams on sea areas in the North Pacific and wave height distribution tables for sea areas worldwide. The scatter diagrams in the North Pacific are further classified into three categories, ship reports, hindcasting and buoy measurement. The data of ship reports, hindcasting and buoy measurement were collected in 1974-1988, 1980-1989 and 1978-1989 respectively. In the case of buoy measurement, there are differences in the measured periods of individual buoys (for details, see Reference 1). The worldwide wave height distribution tables are based on measurements by micro-altimeters loaded on the satellites GEOSAT and TOPEX/POSEIDON (for details, see Reference 2). The following services are available. (1) the Database of Winds and Waves of the North Pacific on the Homepage (2) the Database of Winds and Waves of the North Pacific by Downloading (3) the Database of Wave Height of World Oceans on the Homepage Table 1 and Table 2 show the types of data available in (1) and (2) respectively. The URL of the database homepage is shown below. http://www.nmri.go.jp/wavedb/wave2.html References 1) Iwao WATANABE, Hiroshi TOMITA and Katsuji TANIZAWA: Winds and Waves of the North Pacific Ocean 1974-1988, Papers of Ship Research Institute, Supplement No.14, 1992. 2) Yoshitaka OGAWA and Iwao WATANABE: A Preliminary Study on Wave Statistics Derived from GEOSAT Data, 66th General Meeting of Ship Research Institute, 1995. 1
Table 1 Types of scatter diagrams available on the homepage. Data types Type of tables Hindcasting Wind Speed - Wind Direction (HIND) Wave Height - Wave Direction (HIND) Wave Period - Wave Direction (HIND) Wave Height - Wave Period (HIND) Ship reports Wind Speed - Wind Direction (SHIP) Wave Height - Wave Period (SHIP) Buoy measurements Wave Height - Wave Period (BUOY) Wind Speed - Wind Direction (BUOY) Seasons Spring / Summer / Autumn / Winter / Annual Table 2 Types of scatter diagrams available by downloading. Data types Type of tables Hindcasting Wind Speed - Wind Direction (HIND) Wave Height - Wave Direction (HIND) Wave Period - Wave Direction (HIND) Wave Height - Wave Period (HIND) Ship reports Wind Speed - Wind Direction (SHIP) Wave Height - Wave Direction (SHIP) Wave Period - Wave Direction (SHIP) Wave Height - Wave Period (SHIP) Buoy measurements Wind Speed - Wind Direction (BUOY) Wave Height - Wave Period (BUOY) Seasons Month / Spring / Summer / Autumn / Winter / Annual Fig.1 Division of sea areas. 2
2. Use of the Database on the Homepage The following assumes use of Netscape 4.7 or higher, or Internet Explorer 5.0 or higher as the browser. 2.1 The Database of Winds and Waves of the North Pacific Open the homepage of the database. (http://www.nmri.go.jp/wavedb/wave2.html) On the Access menu at the bottom of the page, click [Access to North Pacific Winds and Waves Database] (Fig. 2). Fig.2 Access menu. This opens the top page of North Pacific Winds and Waves. Click the [Open File] icon button (red circle) at the upper left (Fig. 3). Fig.3 Top page of the North Pacific Winds and Waves. 3
A new Select Window will open (Fig. 4). Select the [Season] and [Data type] from this menu. Click the [LOAD] button to load. When the data is loading the[load] button changes to [STOP] button(fig. 5). If you click [STOP] button, then the data loading is stopped. Data loading is complete when the [STOP] button changes to the [LOAD] button again. Fig.4 Select Window. Fig.5 Select Window (loading data). 4
When loading is complete, the screen will return to the top page in Fig. 3, and the names of sea areas will be displayed (Fig. 6). (Operation in case of selecting buoy measurement is described at the end of this section.) Fig.6 Top page of the North Pacific Winds and Waves (after data loading). Here, double click the sea area to open a new window and display the scatter diagram for that area (Fig. 7). 5
Fig.7 Scatter diagram (the numbers of data for each wave height and wave direction are displayed). Note: Mean value displayed at the top right of the scatter diagram cannot be used when the following data types are selected (irrelevant values might be displayed). Wind Speed - Wind Direction (HIND) Wave Height - Wave Direction (HIND) Wave Period - Wave Direction (HIND) Wind Speed - Wind Direction (SHIP) Wind Speed - Wind Direction (BUOY) To display the data in rose chart form, click the [Rosechart] bar at the top left of the window (Fig. 8). 6
Fig.8 Rose chart. Note: Rose charts cannot be used when the following data types are selected. Wave Height - Wave Period (HIND) Wave Height - Wave Period (BOUY) Next, click the [ROSE CHART] icon button (red circle in Fig.9) at the upper left of the top page to display rose charts for all sea area (Fig.9). Fig.9 Rose charts for all areas. 7
Note: Rose charts cannot be used when the following data types are selected. Wave Height - Wave Period (HIND) Wave Height - Wave Period (BOUY) To display the maximum values for all sea areas, click the [GRAPH] icon button (red circle in Fig.10) at the upper left of the top page. Then the maximum values of wave height or wind speed, depending on the selected data type, will be displayed (Fig. 10). Fig.10 Maximum values for all areas. Note: Maximum value display cannot be used when the following data types are selected (irrelevant values might be displayed). Wind Speed - Wind Direction (HIND) Wave Period - Wave Direction (HIND) Wind Speed - Wind Direction (SHIP) Wave Period - Wave Direction (SHIP) Wind Speed - Wind Direction (BUOY) To display the sea area names, click the [SEA AREA] icon button (red circle in Fig.11) at the upper left of the screen in Fig. 6 (Fig. 11). 8
Fig.11 Names of sea areas. < Selection of buoy measurement data as the [Data type] > When buoy measurement data is selected, the buoy number (Fig. 12) will be displayed instead of sea area names, and the displayed data will correspond to each buoy (Fig. 13). The methods of other operations are the same as in the case of ship reports and hindcasting. Fig.12 Buoy numbers. 9
Fig.13 Maximum values at buoys. 10
2.2 The Database of Wave Height of World Oceans On the Access menu at the bottom of the database homepage, click [Access to Wave Height Database of World Oceans] (Fig. 14). Fig.14 Access menu. This opens the top page of the Wave Height Database of World Oceans (Fig. 15). Double click the desired sea area to open a new window and the significant wave height distribution of that sea area for all seasons is displayed (Fig. 16). Fig.15 Top page of Wave Height Database of World Oceans. 11
Fig.16 Distributions of significant wave height. 12
3. Use of the Database of Winds and Waves of the North Pacific by Downloading 3.1 How to Download On the Access menu at the bottom of the database homepage, click [Download for Winds and Waves Data in the North Pacific] (Fig. 17). Fig.17 Access menu. This opens a Registration Form (Fig. 18). Following the instructions, fill out and send the Form. 13
Fig.18 Registration form. After you have sent the Registration Form, the screen will change to indicate the download file (Fig. 19). The file size is approximately 2.5MB, which is compressed in the Zip format. Fig.19 Instruction of downloading. 14
When you click the file name wave_xls.zip, the browser will confirm whether you want to download. Select save in the file, and save the file in an appropriate folder. When downloading is complete, un-zip the file. At this time a folder named wave_xls will be created automatically, and the files will be created in this folder. 3.2 Operation Guides The following explains the method of operating the North Pacific Winds and Waves Database of EXCEL version, assuming that MS-EXCEL has been installed and the database has been downloaded correctly. Open the EXCEL file named wavedb.xls which exists in the folder wave_xls. If asked whether macro files should be valid or not, make them valid. The worksheet of menu will open automatically (Fig. 20). Fig.20 Worksheet of menu. Select the data type, area name and season in the selection boxes on the menu (Fig. 21). (If buoy measurement data is selected, the buoy No. will be displayed in place of the area name.) 15
Fig.21 Selection boxes on the worksheet of menu. After completing these selections, click the [DISPLAY] button. The scatter diagrams will be output in [table 1] and [table 2] (red circle in Fig. 20). The worksheet [table 1] shows the numbers of frequencies (Fig. 22), while [table 2] shows percentages (Fig. 23). To return to the menu, click the [MENU] button or select [menu] on the worksheet. It is now possible to perform file output, copy, combine, and other operations using the functions of MS-EXCEL. 16
MENU DISPLAY WAVE HEIGHT - WAVE PERIOD AREA SHIP DATA Annual MEAN OF WAVE HEIGHT 1.60 (W) e01 MEAN OF WAVE PERIOD 5.01 (SBC) 0-5- 6-7- 8-9- 10-11- 12-13- 14- TOTAL 14.75-0 0 0 0 0 0 0 0 0 0 0 0 13.75-0 0 0 0 0 0 0 0 0 0 0 0 12.75-0 0 0 0 0 0 0 0 0 0 0 0 11.75-0 0 0 0 0 0 0 0 0 0 0 0 10.75-0 0 0 0 0 0 0 0 0 0 0 0 9.75-0 0 0 0 0 0 0 0 0 0 0 0 8.75-0 0 0 0 0 0 0 0 0 0 0 0 7.75-0 0 0 0 1 0 0 0 0 0 0 1 6.75-0 1 1 2 2 3 3 0 0 1 1 14 5.75-0 1 0 0 3 1 1 0 3 0 0 9 4.75-1 1 5 0 3 6 2 0 1 2 0 21 3.75-0 2 9 12 11 11 6 2 0 0 3 56 2.75-14 22 31 19 22 8 3 3 2 0 1 125 1.75-49 51 31 28 25 7 7 1 1 0 1 201 0.75-226 124 81 50 27 3 4 0 1 0 0 516 0.00-138 53 40 14 12 0 0 0 0 0 0 257 TOTAL 428 255 198 125 106 39 26 6 8 3 6 1200 MAX1 5 7 7 7 8 7 7 4 6 7 7 MAX2 4 5 6 7 8 9 10 11 12 13 14 Fig.22 Scatter diagram (number of frequencies). MENU DISPLAY AREA e01 WAVE HEIGHT - WAVE PERIOD SHIP DATA Annual 0-5- 6-7- 8-9- 10-11- 12-13- 14- TOTAL 14.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 13.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 12.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 11.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 10.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 9.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 8.75-0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 7.75-0.000% 0.000% 0.000% 0.000% 0.083% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.083% 6.75-0.000% 0.083% 0.083% 0.167% 0.167% 0.250% 0.250% 0.000% 0.000% 0.083% 0.083% 1.167% 5.75-0.000% 0.083% 0.000% 0.000% 0.250% 0.083% 0.083% 0.000% 0.250% 0.000% 0.000% 0.750% 4.75-0.083% 0.083% 0.417% 0.000% 0.250% 0.500% 0.167% 0.000% 0.083% 0.167% 0.000% 1.750% 3.75-0.000% 0.167% 0.750% 1.000% 0.917% 0.917% 0.500% 0.167% 0.000% 0.000% 0.250% 4.667% 2.75-1.167% 1.833% 2.583% 1.583% 1.833% 0.667% 0.250% 0.250% 0.167% 0.000% 0.083% 10.417% 1.75-4.083% 4.250% 2.583% 2.333% 2.083% 0.583% 0.583% 0.083% 0.083% 0.000% 0.083% 16.750% 0.75-18.833% 10.333% 6.750% 4.167% 2.250% 0.250% 0.333% 0.000% 0.083% 0.000% 0.000% 43.000% 0.00-11.500% 4.417% 3.333% 1.167% 1.000% 0.000% 0.000% 0.000% 0.000% 0.000% 0.000% 21.417% TOTAL 35.667% 21.250% 16.500% 10.417% 8.833% 3.250% 2.167% 0.500% 0.667% 0.250% 0.500% 100.000% Fig.23 Scatter diagram; (percentage). 17
4. Contact address For further information please contact: National Maritime Research Institute 6-38-1 Shinkawa, Mitaka, Tokyo, 181-0004, Japan Fax: +81-422-41-3784 E-mail: wavedb@nmri.go.jp 18
5. Technical Notes < Units and Seasons > The units and seasons used in the database are shown in Table 3 and Table 4 respectively. Table 3 Units. Item Wind direction Wind speed Wave direction Wave height Wave period Unit degree knot degree meter second Season Spring Summer Autumn Winter Annual Table 4 Seasons. Months from March to May from June to August from September to November from December to February from March to February Table 5 Location and measuring duration of buoys. Mark Number Location Observation Period 1 46001 56.00N, 148.00W 1978-1989 2 46002 42.50N, 130.00W 1978-1989 3 46003 52.00N, 156.00W 1978-1989 4 46004 51.00N, 136.00W 1978-1989 5 46005 46.00N, 131.00W 1978-1989 6 46006 41.00N, 138.00W 1979-1989 7 46010 46.20N, 124.20W 1979-1989 8 46035 57.00N, 177.70W 1985-1989 9 46036 48.30N, 133.90W 1986-1987 10 51001 23.40N, 162.30W 1981-1989 11 51002 17.20N, 157.80W 1984-1989 12 51003 19.20N, 160.80W 1984-1989 13 51004 17.50N, 152.60W 1984-1989 14 21001 39.30N, 145.30E 1978-1987 15 21002 37.30N, 134.23E 1978-1987 16 21003 25.40N, 135.55E 1978-1987 17 21004 29.00N, 135.00E 1981-1987 18 22001 28.20N, 126.20E 1978-1987 19
< Scatter Diagrams > In the scatter diagrams TOTAL shows the sum of each row and column. MAX1 shows the maximum value of item A in the scatter diagram of A-B (wind speed in Fig.24). MAX2 is the value of item B when MAX1 occurred. (1) Wind Speed - Wind Direction MENU DISPLAY AREA e01 WIND SPEED - WIND DIRECTION HIND DATA Annual MEAN OF WIND SPEED 15.57 (KT) Wind speed 345-015- 045-075- 105-135- 165-195- 225-255- 285-315- TOTAL 70-0 0 0 0 0 0 0 0 0 0 0 0 0 60-3 3 2 2 0 0 0 0 0 0 0 3 13 50-13 11 7 6 1 0 0 0 0 1 4 8 51 40-61 27 28 23 11 14 9 4 3 13 37 62 292 30-254 147 80 59 49 78 98 115 57 67 176 393 1573 20-652 323 221 156 145 262 476 810 443 320 895 1205 5908 10-1160 613 464 399 505 736 1284 1784 1364 1183 1682 1672 12846 0-712 549 470 519 540 623 832 930 859 859 873 767 8533 TOTAL 2855 1673 1272 1164 1251 1713 2699 3643 2726 2443 3667 4110 29216 MAX1 67.7 66.7 64.4 64.4 56.4 48.6 47.9 46.3 45.3 55.1 53.3 67.5 MAX2 349 32 49 92 116 159 185 224 253 268 297 329 Wind direction Fig.24 An example of scatter diagram; Wind Speed - Wind Direction. (2) Wave Height - Wave Direction MENU DISPLAY AREA e01 WAVE HEIGHT - WAVE DIRECTION HIND DATA Annual MEAN OF WAVE HEIGHT 2.08 (M) Wave height 345-015- 045-075- 105-135- 165-195- 225-255- 285-315- TOTAL 14.75-0 0 0 0 0 0 0 0 0 0 0 0 0 13.75-0 0 0 0 0 0 0 0 0 0 0 0 0 12.75-0 1 0 0 0 0 0 0 0 0 0 0 1 11.75-1 2 1 0 0 0 0 0 0 0 0 0 4 10.75-2 1 1 1 0 0 0 0 0 0 1 3 9 9.75-1 2 0 1 1 0 0 0 0 0 0 1 6 8.75-5 7 1 3 0 0 0 0 0 0 2 2 20 7.75-6 9 5 2 5 0 0 0 0 0 6 5 38 6.75-20 18 13 5 11 3 1 0 0 2 21 19 113 5.75-44 52 13 9 10 12 3 4 0 6 40 48 241 4.75-73 90 32 22 24 21 13 18 11 14 127 146 591 3.75-137 152 49 49 99 64 58 119 32 38 290 281 1368 2.75-435 336 176 129 341 211 157 452 115 105 709 512 3678 1.75-1062 1068 414 580 1029 817 549 1118 306 270 1098 845 9156 0.75-1578 1785 594 1057 2168 2037 1304 894 238 157 807 556 13175 0.00-136 122 61 93 79 119 123 24 2 0 38 19 816 TOTAL 3500 3645 1360 1951 3767 3284 2208 2629 704 592 3139 2437 29216 MAX1 12.5 12.8 12.7 11.6 10.3 7.3 6.8 6.5 5.7 7.6 11 11.5 MAX2 359 43 66 89 111 155 178 200 246 268 313 337 Wave direction Fig.25 An example of scatter diagram; Wave Height - Wave Direction. 20
(3) Wave Period - Wave Direction MENU DISPLAY AREA e01 WAVE PERIOD - WAVE DIRECTION HIND DATA Annual MEAN OF WAVE PERIOD 7.27 (SBC) Wave period 345-015- 045-075- 105-135- 165-195- 225-255- 285-315- TOTAL 14-0 0 0 0 0 0 0 0 0 0 0 0 0 13-0 1 1 0 0 0 0 0 0 0 0 1 3 12-3 5 3 2 2 0 0 0 0 0 2 3 20 11-10 12 8 6 17 3 1 0 0 0 7 6 70 10-46 54 29 33 59 33 7 1 0 2 36 34 334 09-106 152 105 188 197 147 42 14 3 12 125 168 1259 08-547 577 338 541 809 502 211 167 43 45 495 484 4759 07-1260 1351 547 781 1454 1204 697 737 178 188 1010 862 10269 06-1406 1353 312 376 1161 1250 1067 1398 415 306 1298 806 11148 05-122 140 17 24 68 145 183 312 65 39 166 73 1354 00-0 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 3500 3645 1360 1951 3767 3284 2208 2629 704 592 3139 2437 29216 Wave direction Fig.26 An example of scatter diagram; Wave Period - Wave Direction. (4) Wave Height - Wave Period MENU Wave height DISPLAY WAVE HEIGHT - WAVE PERIOD AREA HIND DATA Annual MEAN OF WAVE HEIGHT 2.08 (W) e01 MEAN OF WAVE PERIOD 7.26 (SBC) 0-5- 6-7- 8-9- 10-11- 12-13- 14- TOTAL 14.75-0 0 0 0 0 0 0 0 0 0 0 0 13.75-0 0 0 0 0 0 0 0 0 0 0 0 12.75-0 0 0 0 0 0 0 0 0 1 0 1 11.75-0 0 0 0 0 0 0 0 3 1 0 4 10.75-0 0 0 0 0 0 0 1 6 1 0 8 9.75-0 0 0 0 0 0 0 2 4 0 0 6 8.75-0 0 0 0 0 0 6 8 4 0 0 18 7.75-0 0 0 0 0 0 16 19 0 0 0 35 6.75-0 0 0 0 0 14 79 12 0 0 0 105 5.75-0 0 0 0 0 131 84 0 0 0 0 215 4.75-0 0 0 0 175 336 3 1 0 0 0 515 3.75-0 0 0 62 1049 90 19 6 1 0 0 1227 2.75-0 0 15 2227 964 76 22 6 1 0 0 3311 1.75-0 1 3751 3498 786 176 33 5 0 0 0 8250 0.75-0 1131 5837 3331 1256 253 48 2 0 0 0 11858 0.00-0 108 442 181 12 0 0 0 0 0 0 743 TOTAL 0 1240 10045 9299 4242 1076 310 62 19 3 0 26296 MAX1 0 1.8 2.8 4.2 5.7 7.4 9.1 10.8 12.5 12.8 0 MAX2 0 5.9 6.9 7.9 8.9 9.9 10.9 11.9 12.7 13.2 0 Wave period Fig.27 An example of scatter diagram; Wave Height - Wave Period. 21
< Folder / File Names When Downloaded > The first folder of the North Pacific Winds and Waves Database is wave_xls. The folders under that folder are identified by assigning names consisting of 8 characters. The first 2 characters express the types of data: bt: buoy measurement ht: hindcasting st: ship reports Characters 5-7 are the item code, and express the item using a combination of numbers: 0: none 1: wind direction 2: wind speed 3: wave direction 4: wave height 5: wave period The files in all folders are text files. The file names are identified as follows: Area Name.k3 < Contents of Files > The contents of the files are shown below by comparison with scatter diagrams. Data classification code shows the data type (Table 6). Year code shows the years (last two digits of western calendar year) when the data accumulation is completed. The season codes identify data as monthly, seasonal or annual (Table 7). The weather code represents winds as 1 and waves as 3. The area name is indicated in Table 8. The total of all values and the values of MAX1 and MAX2 are calculated in advance. "Average value" is obtained by dividing "Total of all values" by "Total number of data". The value of TOTAL is obtained by calculation in the MS-EXCEL macro. Table 6 Data classification codes. Data type Code Ship reports 1 Buoy measurement 2 Hindcasting 3 22
Table 7 Season codes. Season Code from Jan. to Dec. from 1 to 12 Spring 15 Summer 16 Autumn 17 Winter 18 Annual 19 Table 8 Area names. Area Area name All areas ALL All of E areas E% All of M areas M% All of W areas W% Others (an area) 3 23
MENU DISPLAY WAVE HEIGHT - WAVE PERIOD AREA SHIP DATA January MEAN OF WAVE HEIGHT 2.79 (W) all MEAN OF WAVE PERIOD 7.16 (SBC) 0-5- 6-7- 8-9- 10-11- 12-13- 14- TOTAL 14.75-1 0 0 3 3 3 31 7 6 5 14 73 13.75-0 0 0 0 3 3 8 2 1 1 8 26 12.75-0 0 0 1 12 2 11 3 7 5 11 52 11.75-2 4 2 5 23 15 86 19 40 23 44 263 10.75-4 2 1 2 23 18 22 11 39 14 42 178 9.75-4 4 42 45 130 89 177 65 140 39 126 861 8.75-9 9 68 74 179 107 197 79 161 59 179 1121 7.75-11 13 113 120 307 215 398 164 302 76 259 1978 6.75-11 42 1060 554 977 706 1015 336 672 225 476 6074 5.75-98 347 655 845 1756 1205 1921 696 1265 353 759 9900 4.75-262 817 1468 1958 4475 3062 4455 1350 2098 469 818 21232 3.75-770 2431 4744 7126 12673 7499 7518 1994 2513 780 1123 49171 2.75-3466 9024 14367 17773 21336 8826 7971 2095 2513 624 1225 89220 1.75-15726 22921 23143 19248 18045 6416 6273 1425 1978 638 1473 117286 0.75-33042 19869 10746 6734 6280 2148 2360 501 982 294 625 83581 0.00-11850 2094 523 228 331 117 174 91 14 4 8 15434 TOTAL 65256 57577 56932 54716 66553 30431 32617 8838 12731 3609 7190 396450 MAX1 17 12 12.5 15 15 19 20 20 18 17 20 MAX2 3 5 6 7 8 9 10 11 12 13 14 average value Fig.28 An example of scatter diagram; Wave Height - Wave Period, all areas in January. data classification code weather code year code item code "1","88","450","3","ALL","1",1106412.75,2839081.00 1,0,0,3,3,3,31,7,6,5,14 total of all values 0,0,0,0,3,3,8,2,1,1,8 season code 0,0,0,1,12,2,11,3,7,5,11 2,4,2,5,23,15,86,19,40,23,44 area name 4,2,1,2,23,18,22,11,39,14,42 4,4,42,45,130,89,177,65,140,39,126 9,9,68,74,179,107,197,79,161,59,179 11,13,113,120,307,215,398,164,302,76,259 11,42,1060,554,977,706,1015,336,672,225,476 number of data 98,347,655,845,1756,1205,1921,696,1265,353,759 262,817,1468,1958,4475,3062,4455,1350,2098,469,818 770,2431,4744,7126,12673,7499,7518,1994,2513,780,1123 3466,9024,14367,17773,21336,8826,7971,2095,2513,624,1225 15726,22921,23143,19248,18045,6416,6273,1425,1978,638,1473 33042,19869,10746,6734,6280,2148,2360,501,982,294,625 11850,2094,523,228,331,117,174,91,14,4,8 MAX1 17.00,12.00,12.50,15.00,15.00,19.00,20.00,20.00,18.00,17.00,20.00 3.00,5.00,6.00,7.00,8.00,9.00,10.00,11.00,12.00,13.00,14.0 MAX2 Fig.29 An example of text file; wave_xls/st994503/all.k3. 24