A data access system which includes the capability to categorize subsets of the data in the data store, query result or other source of data as aggregate data or as detail data and also the ability to explicitly re-categorize the aggregate data as detail data, e. The package substrate comprises a substrate having a die region and at least one thermal channel region outwardly extending to an edge of the substrate from the die region. Each needle bar is coupled with a needle through a respective thread and actuated selectively in the crochet in order to allow the sewing. The mounting system includes a housing component and a securing component. In a variant of the method, the temperature of the culture system is maintained at or below about 30\xb0 C.