Index: trunk/Ohana/src/opihi/dvo/dbExtractMeasures.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/dbExtractMeasures.c	(revision 28212)
+++ trunk/Ohana/src/opihi/dvo/dbExtractMeasures.c	(revision 28213)
@@ -303,4 +303,7 @@
     case MEAS_AZ: /* OK */
       value.Flt = measure[0].az;
+      break;
+    case MEAS_ALT: /* OK */
+      value.Flt = 90.0 - DEG_RAD*acos(1.0/measure[0].airmass);
       break;
     case MEAS_EXPTIME: /* OK */