Try to implement parsing for all samples in TTAA observation

lib/xmet/rawins.py

@@ -53,15 +53,19 @@ class RawinsObs():
 
         now = datetime.datetime.now(datetime.UTC)
 
-        self.timestamp = datetime.datetime(
+        return {
+            'timestamp': datetime.datetime(
                 year  = now.year,
                 month = now.month,
                 day   = day
             )
+        }
 
-    def parse_surface(self, value: str):
+    def parse_surface_pressure(self, value: str):
         if value[0:2] == '99':
-            self.surface = float(value[2:5])
+            return {
+                'surface': float(value[2:5])
+            }
 
     def parse_temp_dewpoint(self, value: str):
         tenths = int(value[2])
@@ -116,7 +120,23 @@ class RawinsObs():
             }
 
     def parse_ttaa(self):
-        pass
+        samples = list()
+
+        for i in range(2, len(self.values), 3):
+            if len(self.values) <= i+2:
+                break
+
+            samples.append({
+                'pressure':  self.parse_surface_pressure(self.values[i]),
+                'temp_dewp': self.parse_temp_dewpoint(self.values[i+1]),
+                'wind':      self.parse_wind(self.values[i+2])
+            })
+
+        return {
+            'timestamp': self.parse_timestamp(self.values[0]),
+            'station':   int(self.values[1]),
+            'samples':   samples
+        }
 
 class RawinsChunk():
     def __init__(self,