diff --git a/observation_sim/sky_background/data/Zodiacal_map1.dat b/observation_sim/sky_background/data/Zodiacal_map1.dat
index 04935da154410e2022f20cc033072bb1e79449fa..2f3e4d59ad1188b85bcd8b9f86fbb3d4c5dbc426 100644
--- a/observation_sim/sky_background/data/Zodiacal_map1.dat
+++ b/observation_sim/sky_background/data/Zodiacal_map1.dat
@@ -1,5 +1,5 @@
 0  0     5      10   15   20   25   30   45   60   75   90
-0  30000 150000 7000 3140 1610 985  640  275  150  100  76
+0  30000 15000  7000 3140 1610 985  640  275  150  100  76
 5  20000 12000	6000 2940 1540 945  625  271  150  100  76
 10 16000 8000   4740 2470 1370 865  590  264  148  100  76
 15 11500 6780   3440 1860 1110 755  525  251  146  100  76