diff --git a/lib/xmet/raob.py b/lib/xmet/raob.py
index 542f1d1..119f820 100644
--- a/lib/xmet/raob.py
+++ b/lib/xmet/raob.py
@@ -407,7 +407,7 @@ class RAOBObs():
         }
 
     def parse_ttbb_sample(self, tokens: list[str]) -> dict:
-        if tokens[0] == 'NIL':
+        if len(tokens) < 2 or tokens[0] == 'NIL':
             return {}
 
         hp = self.parse_pressure(tokens[0])
@@ -430,7 +430,10 @@ class RAOBObs():
         station   = self.tokens[1]
         samples   = list()
 
-        i = 2
+        sample = self.parse_ttbb_sample(self.tokens[2:4])
+        samples.append(sample)
+
+        i = 4
 
         while i < len(self.tokens):
             if self.tokens[i] == '21212':