Period of Record

The period of record (POR) of a dataset is the date range covered by that dataset. More precisely, it is the time interval starting at the beginning of the dataset's first time step, and ending at the end of its last time step.

The Workbook Explorer displays the POR of each dataset.

Example

The POR of the dataset shown below is 2021-02-12 05:40 to 2021-02-12 08:00. (Note that the last time step begins at 07:50, but ends at 08:00.)

Start Time	Speed 75m	Direction 72m
Start Time	(m/s)	(°)
2021-02-12 05:40	8.10	287
2021-02-12 05:50	8.14	268
2021-02-12 06:00	7.53	250
2021-02-12 06:10	7.45	236
2021-02-12 06:20	6.49	232
2021-02-12 06:30	5.43	225
2021-02-12 06:40	4.81	222
2021-02-12 06:50	4.57	225
2021-02-12 07:00	4.84	223
2021-02-12 07:10	4.65	219
2021-02-12 07:20	4.65	218
2021-02-12 07:30	4.98	217
2021-02-12 07:40	5.24	227
2021-02-12 07:50	5.62	264