This is the first in a series of columns in which I plan to demonstrate examples of systems performance information that can be gleaned from trend log analysis. Whether the trended data comes from a BAS or from portable dataloggers, the analysis is the same. In these columns, I will introduce a system or sub-system, show a trend graph, and then leave it up to the reader to discover the operational "issue" illustrated in the graph. The answer will be given at the start of the subsequent month's column.
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