A system for determining a data converter operating mode includes measurement circuitry operable to measure a master clock frequency of a master clock signal, the master clock frequency measurement biased by a past operating mode selection, and operable to measure a frequency ratio between a frequency of a data clock signal and the master clock frequency. The method commences by receiving a workload comprising a plurality of queries, then analyzes the queries to determine stratification buckets based on the usage of tables in the queries. A ring is mounted to the base plate for selected rotation around the light opening, and a support track between the curved dome and the base plate is secured on its lower end to the ring and curved up and toward the light opening from its lower end. The semihydrochloride of 8-cyano-1-cyclopropyl-7–6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid can be described by the following formula: . The heat sink layer is disposed between the servo layer and the data recording layer.