Question: When 720 is the t c (°c) what is the   h ci (ka/m)?
Schema: create table table_2282444_1 (h_ci__ka_m_ varchar, t_c__°c_ varchar, PRIMARY KEY (h_ci__ka_m_))
SQL: select h_ci__ka_m_ from table_2282444_1 where t_c__°c_ = "720"