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;