Cal. Penal Code § 13012.4
(a) The annual report published by the department under Section 13010 shall, in regard to the contents required by paragraph (3) of subdivision (a) of Section 13012, include the annual number of minors placed on electronic monitoring, as defined in Section 628.2 of the Welfare and Institutions Code, including all of the following information for each minor:
(3) For which of the following reasons was the minor placed or reinstated on electronic monitoring:
(4) For which of the following reasons was a minor on electronic monitoring detained in juvenile hall: