<li><b>api_key</b> (string) - Write API Key for this specific Channel (required). The Write API Key can optionally be sent via an X-THINGSPEAKAPIKEY HTTP header.</li>
<li><b>field1</b> (string) - Field 1 data (optional)</li>
<li><b>field2</b> (string) - Field 2 data (optional)</li>
<li><b>field3</b> (string) - Field 3 data (optional)</li>
<li><b>field4</b> (string) - Field 4 data (optional)</li>
<li><b>field5</b> (string) - Field 5 data (optional)</li>
<li><b>field6</b> (string) - Field 6 data (optional)</li>
<li><b>field7</b> (string) - Field 7 data (optional)</li>
<li><b>field8</b> (string) - Field 8 data (optional)</li>
<li><b>lat</b> (decimal) - Latitude in degrees (optional)</li>
<li><b>long</b> (decimal) - Longitude in degrees (optional)</li>
<li><b>elevation</b> (integer) - Elevation in meters (optional)</li>
<li><b>status</b> (string) - Status update message (optional)</li>
<li><b>twitter</b> (string) - Twitter username linked to <a href="/docs/thingtweet">ThingTweet</a> (optional)</li>