1 files changed, 5 insertions, 7 deletions

diff --git a/diff.awk b/diff.awk
index 3923f8b..41859db 100644
--- a/diff.awk
+++ b/diff.awk
@@ -11,27 +11,25 @@ NR == 1 {
     header_nf = NF
     for (n=1; n<=NF; n++) {
         if ($n !~ number)
-            header[n] = $n
+            header[n] = "d" $n
         else
-            header[n] = n
+            header[n] = "col_" n
+        printf("%s,", header[n])
     }
 }
 
 NF != 0 {
-    printf("\n%s: %s\n", NR, $0)
     if (NF > max_nf)
         max_nf = NF
 
     ### iterate over columns
     for (y=1; y<=max_nf; y++) {
         if ($y ~ number) {
-            count[y] += 1
             data[y] = $y
-            sum[y] += $y
-            mean[y] = data[y]
             diff[y] = data[y] - data_prev[y]
-            print header[y], data[y], sum[y], diff[y]
+            printf("%g,", diff[y])
             data_prev[y] = data[y]
         }
     }
+    printf("\n")
 }