diff --git a/server/db_template.sql b/server/db_template.sql
index 4c2408e..05a7193 100644
--- a/server/db_template.sql
+++ b/server/db_template.sql
@@ -11,10 +11,11 @@ CREATE TABLE rssis IF NOT EXISTS (
 	reading_id INTEGER, -- The id of the object in the readings table that this rssi measurement belongs to
 	gateway_id INTEGER, -- Gateway id that the RSSI was from
 	rssi FLOAT, -- The RSSI value itself
+	snr FLOAT, -- The signal-to-noise ratio
 	channel INTEGER -- The channel that the RSSI was received over. We might be able to use this to detect single-channel gateways
 );
 CREATE TABLE gateways IF NOT EXISTS (
-	id TEXT PRIMARY KEY, -- The gateway s name
+	id TEXT PRIMARY KEY, -- The gateway's name
 	lat FLOAT, -- Latitude component of the claimed GPS co-ordinates of the gateway
 	long FLOAT -- Longitude component of the claimed GPS co-ordinates of the gateway
 	altitude FLOAT -- Claimed alitude of the gateway