*First line (see below)"0089","DOVER",51.12,1.32,20020101,10,+0000
*Second line (see below)0715,L,0.962,1201,H,6.696,1938,L,1.017
6684 *Interval Data (see below)
6639
6582
6513
6436
6351
6258
6157
6048
5928
5798
5655
5502
5336
5160
4976
4784
4587
4388
4188
3989
3792
3598
3408
3221
3039
2861
2688
2519
2355
2197
2044
1898
1759
1628
1505
1392
1291
1201
1125
1062
1014
981
964
964
981
1018
1076
1158
etc.

*First line
"Port Number","Port Name",Latitude [in decimal degrees dd.dd positive north negative south],Longitude [in decimal degrees dd.dd positive east negative west],Date [yyyymmdd],Time Interval Height Output [10 minutes in this sample file, but can be in the range 1 to 120 minutes],Time Zone [+/-hhmm]

*Second line
Time [24 hour format hhmm],Event [High or Low Water H/L],Height [metres above Chart Datum m.mmm],Time [24 hour format hhmm],Event [High or Low Water H/L],Height [metres above Chart Datum m.mmm],Time [24 hour format hhmm],Event [High or Low Water H/L],Height [metres above Chart Datum m.mmm],Time [24 hour format hhmm],Event [High or Low Water H/L],Height [metres above Chart Datum m.mmm]

Note that the fourth event is not always present depending on when that event occurs with a 24-hour period (i.e. it occurs early on the next day).

*Interval Data
Progressing down the file is the height of tide in millimetres above Chart Datum at the time interval specified in the header record. In the above example this is 10 minute heights, starting at 0000 hours in the time zone indicated, and increasing at each 10-minute interval until the end of the 24 hour period is reached. The next day's header information is then shown followed by the interval heights, and so on.