Index: trunk/Mars/fact/processing/camhum.C
===================================================================
--- trunk/Mars/fact/processing/camhum.C	(revision 18310)
+++ trunk/Mars/fact/processing/camhum.C	(revision 18310)
@@ -0,0 +1,65 @@
+void camhum(const char *fname, double beg=0, double end=100000)
+{
+    fits file(fname);
+
+    //file.PrintColumns();
+    //file.PrintKeys();
+
+    Double_t time;
+    Float_t hum[4];
+    file.SetPtrAddress("Time", &time);
+    file.SetPtrAddress("H",     hum);
+
+    UInt_t offset = file.GetUInt("MJDREF");
+    if (beg < 30000)
+        beg+=offset;
+    if (end < 30000)
+        end+=offset;
+
+    double avg    = 0;
+    int    cnt    = 0;
+
+    double last  = -1;
+    double diff  = -1;
+
+    while (file.GetNextRow())
+    {
+        time += offset;
+
+        if (time>end)
+            break;
+
+        int    n = 0;
+        double h = 0;
+        for (int i=0; i<4; i++)
+            if (hum[i]>0)
+            {
+                h += hum[i];
+                n++;
+            }
+
+        if (n==0)
+            continue;
+
+        if (time<beg)
+        {
+            last = h/n;
+            diff = beg-time;
+            continue;
+        }
+
+        avg += h/n;
+        cnt ++;
+    }
+
+    if (cnt==0)
+    {
+        if (diff<5./24/3600)
+            return;
+
+        cout << "result " << last << endl;
+        return;
+    }
+
+    cout << "result " << avg/cnt << endl;
+}