diff --git a/3DTank/tools/analyze_nullmap_trace.py b/3DTank/tools/analyze_nullmap_trace.py
index 329e51a..4ac587c 100644
--- a/3DTank/tools/analyze_nullmap_trace.py
+++ b/3DTank/tools/analyze_nullmap_trace.py
@@ -78,10 +78,14 @@ def Main():
         ElemName = Elems[0][1] if len(Elems) == 1 else Group[0].get('elem')
         Owners = FindOwners(Codecs, ElemName) if ElemName else []
         Bits = Counter(R.get('bit') for R in Group)
-        Seq = ''.join(str(R.get('bit')) for R in Group[:40])
+        Pos = [R.get('pos') for R in Group if isinstance(R.get('pos'), int) and R.get('pos') >= 0]
+        Seq = ''.join('1' if R.get('bit') else '0' for R in Group[:40])
         Where = (Owners[0][0] + ' . ' + str(Owners[0][1])) if len(Owners) == 1 else '?'
         print('    hid=%-4s 次数=%-4d bit0=%-4d bit1=%-4d 元素=%-22s 字段=%s'
               % (Hid, len(Group), Bits.get(0, 0), Bits.get(1, 0), ElemName or '?', Where))
+        if Pos:
+            print('        客户端位游标 pos：首个=%d 最后=%d 前 12 个=%s'
+                  % (Pos[0], Pos[-1], ','.join(str(P) for P in Pos[:12])))
         if len(Seq) >= 4:
             print('        位序列：' + Seq)
         if len(Elems) > 1: