diff --git a/boards/default_src/micropython/origin/build/lib/spl06_001.py b/boards/default_src/micropython/origin/build/lib/spl06_001.py
index 01353f56..76184682 100644
--- a/boards/default_src/micropython/origin/build/lib/spl06_001.py
+++ b/boards/default_src/micropython/origin/build/lib/spl06_001.py
@@ -111,5 +111,5 @@ class SPL06:
 	def temperature(self): 
 		return self.getdata[1]
 
-	def altitude(self): 
-		return self.getdata[2]
+	def altitude(self, reference=1013.25):
+		return round((pow((reference / 33.8639), 0.190255) - pow((self.getdata[0] / 33.8639), 0.190255)) / 0.000013125214, 2)