diff --git a/lib/xmet/skew_t.py b/lib/xmet/skew_t.py
index 7e35304..fc4f723 100644
--- a/lib/xmet/skew_t.py
+++ b/lib/xmet/skew_t.py
@@ -40,7 +40,7 @@ class SkewTGraph():
     def graph_to_screen(self, x, y) -> tuple:
         return (self.width / 2) + x, self.height - y
 
-    def pressure_y(self, pressure: float) -> float:
+    def pressure_to_y(self, pressure: float) -> float:
         log_p  = math.log(clamp(pressure, PRESSURE_MIN, PRESSURE_MAX))
         factor = (PRESSURE_LOG_MAX - log_p) / PRESSURE_LOG_RANGE
 
@@ -51,7 +51,7 @@ class SkewTGraph():
 
         for pressure in range(PRESSURE_MIN, PRESSURE_MAX+1, PRESSURE_STEP):
             coord = self.graph_to_screen(-self.width / 2,
-                                         self.pressure_y(pressure))
+                                         self.pressure_to_y(pressure))
 
             cr.set_source_rgba(0, 0, 0, 0.5)
             cr.move_to(x + coord[0], y + coord[1])
@@ -63,7 +63,7 @@ class SkewTGraph():
 
     def sample_to_graph(self, temp: float, pressure: float):
         x = (temp / TEMP_STEP) * self.temp_step_width
-        y = self.pressure_y(pressure)
+        y = self.pressure_to_y(pressure)
 
         return self.skew_t_to_graph(x, y)