This document presents the rating scales used at Midroog as well as various definitions related to ratings. The purpose of this document is to create transparency in respect to the rating definitions and to present them as clearly and simply as possible. The scales came into force on September 1st, 20153. This publication of the definitions does not change the existing ratings. In addition to credit ratings, this document includes symbols and definitions for ancillary services, and relative scores for other services and assets, that are not credit ratings.