The Use Case:

Instantaneous provision of summary values from timeseries monitoring and differentiation of clouds over land / over water.

The service:

The current percentage of cloud coverage is delivered, numbers are colored differently if a given threshold is exceeded. Bored, disappointed? It's not always "Big Data" that come back from "Big Data" queries. Consider the scenario that an alerter rings a bell, sends a text message, or triggers any kind of reactive process.