diff --git a/src/pg_rad/data/field_efficiencies/LU_NaIR.csv b/src/pg_rad/data/field_efficiencies/LU_NaIR.csv
index f5bbea2..ca48a1b 100644
--- a/src/pg_rad/data/field_efficiencies/LU_NaIR.csv
+++ b/src/pg_rad/data/field_efficiencies/LU_NaIR.csv
@@ -1,3 +1,5 @@
 energy_keV,field_efficiency_m2
 0,0
-662,0.0216
\ No newline at end of file
+661.657,0.0261
+1173.228,0.0203
+1332.492,0.0166
\ No newline at end of file