# 2. Design Implementation Constraints

## 2.1 General

Unisphere will provide weather information and observations through REST API to customers. Therefore, Unisphere integrates multiple weather service providers, extracts, transforms and provides data to USSP/UTM providers or other types of users conveniently.

<figure><img src="/files/Eh3vGBHlHtEyigkkiOwN" alt=""><figcaption><p>Weather Information Service High Level Diagram</p></figcaption></figure>

## 2.2 Data Quality & Obligations

Unisphere guarantees that the weather information is UP-TO-DATE with latest available data of the source.

* Upon receipt of updated weather information related to current weather, Unisphere assures to provides the data with within maximum 30 seconds.
* Upon receipt of an updated weather forecast, the USSP should provide the information to the UAS operator within maximum 5 minutes from the time the data is being processed by the USSP. The USSP should inform the user when the information is not up to date.
* Up-to-date weather information is considered as the last available data for the geographical point.
* Unisphere is not responsible for ensuring that the data being exposed by the trusted source is effectively the last available data.

Unisphere guarantees that the weather information is RELIABLE.

* The source of the data at the request is documented in this document, chapter 3.4.
* As long as not provided by the individual source of data Unisphere cannot provide a confidence level of the information and will not. Data will either be valid or not.
* Unisphere assures to not tamper any information provided by the individual source.
* The USSPs should ensure that the UAS operator is presented with accurate information that has not been tampered with information regarding the confidence level of the data where this is available at the source.


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