diff --git a/src/tuxedo_io/tuxedo_io.c b/src/tuxedo_io/tuxedo_io.c
index 86d16ab..3a532d6 100644
--- a/src/tuxedo_io/tuxedo_io.c
+++ b/src/tuxedo_io/tuxedo_io.c
@@ -79,17 +79,17 @@ static int tdp_max_ph4trx[] = { 0x32, 0x32, 0x00 };
 static int tdp_min_ph4tqx[] = { 0x01, 0x01, 0x00 };
 static int tdp_max_ph4tqx[] = { 0x32, 0x32, 0x00 };
 
-static int tdp_min_gmxngxx[] = { 0x01, 0x01, 0x01 };
-static int tdp_max_gmxngxx[] = { 0x78, 0x78, 0x78 };
+static int tdp_min_gmxngxx[] = { 0x0a, 0x0a, 0x0a };
+static int tdp_max_gmxngxx[] = { 0x50, 0x50, 0x5f };
 
-static int tdp_min_gmxmgxx[] = { 0x01, 0x01, 0x01 };
-static int tdp_max_gmxmgxx[] = { 0x78, 0x78, 0x78 };
+static int tdp_min_gmxmgxx[] = { 0x0a, 0x0a, 0x0a };
+static int tdp_max_gmxmgxx[] = { 0x78, 0x78, 0xc8 };
 
-static int tdp_min_gmxtgxx[] = { 0x01, 0x01, 0x01 };
-static int tdp_max_gmxtgxx[] = { 0x78, 0x78, 0x78 };
+static int tdp_min_gmxtgxx[] = { 0x0a, 0x0a, 0x0a };
+static int tdp_max_gmxtgxx[] = { 0x78, 0x78, 0xc8 };
 
-static int tdp_min_gmxzgxx[] = { 0x01, 0x01, 0x01 };
-static int tdp_max_gmxzgxx[] = { 0x78, 0x78, 0x78 };
+static int tdp_min_gmxzgxx[] = { 0x0a, 0x0a, 0x0a };
+static int tdp_max_gmxzgxx[] = { 0x50, 0x50, 0x5f };
 
 static int *tdp_min_defs = NULL;
 static int *tdp_max_defs = NULL;