Add Null values and new measurements

internal/migrations/files/0006.sql

@@ -0,0 +1,3 @@
+ALTER TABLE measurement
+	ADD i_gem_n DOUBLE PRECISION,
+	ADD u_gem_n DOUBLE PRECISION;

internal/migrations/files/0007.sql

@@ -0,0 +1,29 @@
+ALTER TABLE measurement
+	ADD b_gem_1 DOUBLE PRECISION,
+	ADD b_gem_2 DOUBLE PRECISION,
+	ADD b_gem_3 DOUBLE PRECISION,
+	ADD b_gem_n DOUBLE PRECISION,
+
+	ADD s_gem_1 DOUBLE PRECISION,
+	ADD s_gem_2 DOUBLE PRECISION,
+	ADD s_gem_3 DOUBLE PRECISION,
+	ADD s_gem_n DOUBLE PRECISION,
+
+	ADD p_gem_1 DOUBLE PRECISION,
+	ADD p_gem_2 DOUBLE PRECISION,
+	ADD p_gem_3 DOUBLE PRECISION,
+	ADD p_gem_n DOUBLE PRECISION,
+
+	ADD uthd_1  DOUBLE PRECISION,
+	ADD uthd_2  DOUBLE PRECISION,
+	ADD uthd_3  DOUBLE PRECISION,
+	ADD uthd_n  DOUBLE PRECISION,
+
+	ADD ithd_1  DOUBLE PRECISION,
+	ADD ithd_2  DOUBLE PRECISION,
+	ADD ithd_3  DOUBLE PRECISION,
+	ADD ithd_n  DOUBLE PRECISION,
+
+	ADD c_gem_n DOUBLE PRECISION,
+
+	ADD freq    DOUBLE PRECISION;