<div dir="ltr"><div>rr:station data，have undef data</div><div>undef:9999.9</div><div>it=1,3,6,12...72</div><div><br></div><div>&#39;d stnave(rr,t=&#39;72-it+1&#39;,t=72)*&#39;it&#39;&#39;<br></div>&#39;d stnave(<b>const(rr, 0, -u)</b>,t=&#39;72-it+1&#39;,t=72)*&#39;it&#39;&#39;<br><div><br></div><div><span style="color:rgb(0,0,0);font-family:&quot;microsoft yahei&quot;,verdana,arial,sans-serif;font-size:16px;background-color:rgb(246,246,246)">the same result</span><br></div><div><span style="color:rgb(0,0,0);font-family:&quot;microsoft yahei&quot;,verdana,arial,sans-serif;font-size:16px;background-color:rgb(246,246,246)"><br></span></div><div><span style="color:rgb(0,0,0);font-family:&quot;microsoft yahei&quot;,verdana,arial,sans-serif;font-size:16px;background-color:rgb(246,246,246)">BTW:</span><strong style="font-size:13px;margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;color:rgb(85,85,85);font-family:sans-serif"><span style="margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;background-color:transparent"> XP grads-2.0.2.oga.2 </span></strong></div><div><strong style="font-size:13px;margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;color:rgb(85,85,85);font-family:sans-serif"><span style="margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;background-color:transparent"><br></span></strong></div><div><strong style="font-size:13px;margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;color:rgb(85,85,85);font-family:sans-serif"><span style="margin:0px;padding:0px;border:0px;outline:0px;vertical-align:baseline;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;background-color:transparent"><br></span></strong></div><div><span style="color:rgb(0,0,0);font-family:&quot;microsoft yahei&quot;,verdana,arial,sans-serif;font-size:16px;background-color:rgb(246,246,246)"><br></span></div><div><br></div></div>