Add graw logo

Author: Mark Jessop

img/sondehub_supporters.kra

@@ -27,7 +27,7 @@
     <div id="loading">
         <div>
             <img src="img/sondehub_logo.png" />
-            <img src="img/splash/splash-wide.png" style="transform: translate(-50%,250%);"/>
+            <img src="img/splash/splash-wide.png" style="transform: translate(-50%,170%);"/>
             <div class="bar" style="display: none"><div class="complete"></div></div>
         </div>
     </div>
@@ -96,7 +96,8 @@ <h4>Recovered a Sonde?</h4>
 
                 <h4>Support Us!</h4>
                 AWS hosting unfortunately does not come cheap. 
-                If you use SondeHub regularly, please consider <a href="https://www.patreon.com/sondehub" target="_blank" rel="noopener">supporting us on Patreon</a>, or with a <a href="https://sondehub.org/go/donate" target="_blank" rel="noopener">donation on Paypal</a>.
+                If you use SondeHub regularly, please consider <a href="https://www.patreon.com/sondehub" target="_blank" rel="noopener">supporting us on Patreon</a>, or with a <a href="https://sondehub.org/go/donate" target="_blank" rel="noopener">donation on Paypal</a>.</br>
+                We gratefully thank our major supporters <a href="https://ampr.org" target="_blank" rel="noopener">ARDC</a> and <a href="https://www.graw.de" target="_blank" rel="noopener">Graw Radiosondes!</a>
 
                 <h4>Amateur HAB Launches?</h4>
                 You can find Amateur High-Altitude Balloon launches on the <a href="https://amateur.sondehub.org/" target="_blank" rel="noopener">Sondehub-Amateur Tracker</a>.