> For the complete documentation index, see [llms.txt](https://3dpaws.comet.ucar.edu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://3dpaws.comet.ucar.edu/accessing-the-data.md).

# Accessing the Data

### Overview

3D-PAWS stations transmit environmental data through cloud services for viewing, analysis, and integration into observation systems.

***

### Data Flow

Sensors → Data Logger → Network → CHORDS → Grafana

***

### Viewing Data

| Platform | Purpose            | Key Features                                                  |
| -------- | ------------------ | ------------------------------------------------------------- |
| CHORDS   | Storage and access | Time-series data, API endpoints, external integration         |
| Grafana  | Visualization      | Real-time dashboards, historical analysis, customizable views |

***

### Common Tasks

* verify data is being received
* check timestamps and update frequency
* review sensor values against expected ranges
* confirm consistent data updates

***

### Data Quality Checks

Compare observations to expected conditions:

| Sensor      | Expected Behavior                     |
| ----------- | ------------------------------------- |
| Temperature | Within local diurnal range            |
| Pressure    | Consistent with nearby stations       |
| Rainfall    | Matches observed precipitation events |
| Wind        | Reasonable speeds and directions      |

→ See [**Site Selection**](/deploying-3d-paws/site-selection.md) for siting-related issues.

***

### Troubleshooting Data Issues

If data is missing or incorrect:

1. check data logger connectivity
2. verify power system (battery and solar)
3. inspect sensor connections
4. confirm configuration settings

→ See [**Troubleshooting**](/station-maintenance-and-operations/troubleshooting.md) for detailed guidance.

***

### Summary

Accessing data allows you to verify system performance and ensure observations are accurate and usable for analysis.


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