diff --git a/airshower_beacon_simulation/dc_grid_power_time_fixes.py b/airshower_beacon_simulation/dc_grid_power_time_fixes.py
index 57af6af..49066ec 100755
--- a/airshower_beacon_simulation/dc_grid_power_time_fixes.py
+++ b/airshower_beacon_simulation/dc_grid_power_time_fixes.py
@@ -18,7 +18,6 @@ import aa_generate_beacon as beacon
 import lib
 from lib import rit
 
-
 def save_overlapping_traces_figure(test_location, ev, N_plot = 30, wx=200, title_extra=None, fname_distinguish='', fig_dir=None, **fig_kwargs):
     P, t_, a_, a_sum, t_sum = rit.pow_and_time(test_location, ev, dt=1)
 
@@ -28,7 +27,8 @@ def save_overlapping_traces_figure(test_location, ev, N_plot = 30, wx=200, title
     axs.set_ylabel("Amplitude [$\\mu V/m$]")
     if True:
         text_loc = (0.02, 0.95)
-        axs.text(*text_loc, '[' + ', '.join(['{:.1g}'.format(x) for x in test_location]) + ']', ha='left', transform=axs.transAxes)
+        shower_plane_location = rit.location_to_shower_plane(test_location, ev=ev)
+        axs.text(*text_loc, '[' + ', '.join(['{:.1g}'.format(x) for x in shower_plane_location]) + ']', ha='left', transform=axs.transAxes)
 
     a_max = [ np.amax(ant.E_AxB) for ant in ev.antennas ]
     power_sort_idx = np.argsort(a_max)
diff --git a/airshower_beacon_simulation/lib/rit.py b/airshower_beacon_simulation/lib/rit.py
index db0ae45..821a4ef 100644
--- a/airshower_beacon_simulation/lib/rit.py
+++ b/airshower_beacon_simulation/lib/rit.py
@@ -22,6 +22,32 @@ atm = AtmoCal()
 
 from matplotlib import cm
 
+def location_to_shower_plane(loc, u=None, ev=None):
+    if ev is not None:
+        uAxB = ev.uAxB
+        uAxAxB = ev.uAxAxB
+        uA = ev.uA
+    else:
+        uAxB, uAxAxB, uA = u
+
+    return np.dot(loc, uAxB), np.dot(loc, uAxAxB), np.dot(loc, uA)
+
+def shower_plane_to_location( x, dXref=0, u=None, ev=None):
+    if len(x) == 2:
+        x, y = x
+    else:
+        x, y, dXref = x
+
+    if ev is not None:
+        uAxB = ev.uAxB
+        uAxAxB = ev.uAxAxB
+        uA = ev.uA
+    else:
+        uAxB, uAxAxB, uA = u
+
+    return x * uAxB + y * uAxAxB + dXref * uA
+
+
 def set_pol_and_bp(e,low=0.03,high=0.08):
     for ant in e.antennas:
         E = [np.dot(e.uAxB,[ex,ey,ez]) for ex,ey,ez in zip(ant.Ex,ant.Ey,ant.Ez)]