The "seaLevel_delay" collection contains hourly sea level data from
the "Delayed Mode Sea Level DAC" at the British Oceanographic Data
Centre (BODC). Note that long sequences are broken into separate
pieces of approximately 2 years duration. The station labels of those
pieces are numbered sequentially. For more information see the
"sl-delay" directory of the WOCE Global Data, Version 3.0 disks.