Page Comparison

Not Recommended

Discrete Time Window (no overlap)

Example

• Start=Now-180 minutes,

• End=Now-165 minutes,

• Frequency=Every 15 minutes

Although this option is simpler from a data parsing perspective, we do not recommend it.

• More Latency:   This options option requires choosing a period in the past to avoid missing data, thus increasing the latency which is bound by the start time-frequency.

• Incomplete Data:  Calling only once means any AIS data that is delayed will be missed and not picked up in a subsequent call. The closer the start time is to real time, the more missed data/events there will be.