*First Line (see below)"0062","SOUTHAMPTON",50.88,-1.40,20020102,10,+0000
*Second line (see below)0030,H,4.661,0244,H,4.494,0613,L,0.831,1247,H,4.699,1459,H,4.366,1836,L,0.625
4529 * Interval Data (see below)
4603
4647
4661
4650
4621
4580
4535
4493
4458
4436
4427
4430
4444
4463
4481
4493
4491
4470
4423
4346
4235
4089
3908
3691
3444
3170
2878
2576
2273
1979
1704
1457
1246
1075
948
867
832
842
892
978
1094
1235
1391
1556
1721
1878
2021
2145
2246
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],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 sixth 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.