What is the maximum miles per hour recorded when the  CHI (Carvill Hurricane Index) is equal to 13.5
CREATE TABLE table_15416002_1 (v_mph_ INTEGER, chi VARCHAR)
SELECT MAX(v_mph_) FROM table_15416002_1 WHERE chi = "13.5"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15416002_1 (v_mph_ INTEGER, chi VARCHAR) Question: What is the maximum miles per hour recorded when the  CHI (Carvill Hurricane Index) is equal to 13.5 [/INST] SELECT MAX(v_mph_) FROM table_15416002_1 WHERE chi = "13.5" </s>