diff --git a/lib/xmet/igra.py b/lib/xmet/igra.py
index bdb5dc4..abaaecc 100644
--- a/lib/xmet/igra.py
+++ b/lib/xmet/igra.py
@@ -17,25 +17,25 @@ RE_HEADER = re.compile(r'''
     [ ] (?P<numlev>[0-9\ ]{4})
     [ ] (?P<p_src>.{8})
     [ ] (?P<np_src>.{8})
-    [ ] (?P<lat>[0-9 ]{7})
-    [ ] (?P<lon>[0-9 ]{8})
+    [ ] (?P<lat>[0-9\- ]{7})
+    [ ] (?P<lon>[0-9\- ]{8})
     $
 ''', re.X)
 
 RE_SAMPLE = re.compile(r'''
       ^ (?P<lvltyp1>\d)
         (?P<lvltyp2>\d)
-    [ ] (?P<etime>[0-9 \-]{5})
-        (?P<press>[0-9 \-]{7})
+    [ ] (?P<etime>[0-9\- ]{5})
+        (?P<press>[0-9\- ]{7})
         (?P<pflag>[AB ])
-        (?P<gph>[0-9 \-]{5})
+        (?P<gph>[0-9\- ]{5})
         (?P<zflag>[AB ])
-        (?P<temp>[0-9 \-]{5})
+        (?P<temp>[0-9\- ]{5})
         (?P<tflag>[AB ])
-        (?P<rh>[0-9 \-]{5})
-    [ ] (?P<dpdp>[0-9 \-]{5})
-    [ ] (?P<wdir>[0-9 \-]{5})
-    [ ] (?P<wspd>[0-9 \-]{5})
+        (?P<rh>[0-9\- ]{5})
+    [ ] (?P<dpdp>[0-9\- ]{5})
+    [ ] (?P<wdir>[0-9\- ]{5})
+    [ ] (?P<wspd>[0-9\- ]{5})
 ''', re.X)
 
 def etime_to_seconds(etime: str) -> int: