diff --git a/radiation/p1adjoint/of_grad_cd.csv.ref b/radiation/p1adjoint/of_grad_cd.csv.ref
deleted file mode 100644
index 8c422aae..00000000
--- a/radiation/p1adjoint/of_grad_cd.csv.ref
+++ /dev/null
@@ -1,51 +0,0 @@
-"VARIABLE"      , "GRADIENT"      , "FINDIFF_STEP"  
-0               , -0.000954218    , 0.001           
-1               , -0.00432384     , 0.001           
-2               , -0.0111485      , 0.001           
-3               , -0.0214656      , 0.001           
-4               , -0.0344212      , 0.001           
-5               , -0.0490221      , 0.001           
-6               , -0.0643278      , 0.001           
-7               , -0.0792041      , 0.001           
-8               , -0.0924318      , 0.001           
-9               , -0.103025       , 0.001           
-10              , -0.110239       , 0.001           
-11              , -0.113383       , 0.001           
-12              , -0.111898       , 0.001           
-13              , -0.105745       , 0.001           
-14              , -0.0956773      , 0.001           
-15              , -0.0830288      , 0.001           
-16              , -0.069201       , 0.001           
-17              , -0.0553022      , 0.001           
-18              , -0.0421316      , 0.001           
-19              , -0.0303252      , 0.001           
-20              , -0.0203976      , 0.001           
-21              , -0.0126387      , 0.001           
-22              , -0.00701749     , 0.001           
-23              , -0.0032361      , 0.001           
-24              , -0.000955756    , 0.001           
-25              , 0.00128953      , 0.001           
-26              , 0.00518424      , 0.001           
-27              , 0.0125712       , 0.001           
-28              , 0.0234942       , 0.001           
-29              , 0.0370801       , 0.001           
-30              , 0.052231        , 0.001           
-31              , 0.06787         , 0.001           
-32              , 0.0827503       , 0.001           
-33              , 0.0955927       , 0.001           
-34              , 0.105415        , 0.001           
-35              , 0.11154         , 0.001           
-36              , 0.113399        , 0.001           
-37              , 0.110583        , 0.001           
-38              , 0.103215        , 0.001           
-39              , 0.0921957       , 0.001           
-40              , 0.0789703       , 0.001           
-41              , 0.0650043       , 0.001           
-42              , 0.0514107       , 0.001           
-43              , 0.0389322       , 0.001           
-44              , 0.0280921       , 0.001           
-45              , 0.0192441       , 0.001           
-46              , 0.0124768       , 0.001           
-47              , 0.00752972      , 0.001           
-48              , 0.00391057      , 0.001           
-49              , 0.00131276      , 0.001