When  0.6–1.4 is the b r (t) what is the h ci (ka/m)?
CREATE TABLE "magnetic_properties" (
  "magnet" text,
  "b_r_t" text,
  "h_ci_k_a_m" text,
  "bh_max_k_j_m_3" text,
  "t_c_c" text
);
SELECT "h_ci_k_a_m" FROM "magnetic_properties" WHERE "b_r_t"='0.6–1.4';