Epoch in the query response

The third field on a line is always the epoch number, representing the time of day in local time (including daylight saving or summertime shifts). You can choose to have your data broken down into 5-minute epochs across the day, or in 15-minute or 60-minute epochs. If you have chosen 5-minute epochs, then the field has a value from 0 to 287, where 0 indicates 0:00:00-0:04:59 or 12:00:00AM-12:04:59AM, 1 indicates 0:05:00-0:09:59 or 12:05:00AM-12:09:59AM, and so on. If you have chosen 15-minute or 60-min, the range is 0-95 or 0-23, respectively. Choose whichever granularity is best suited to your analysis. Increasing the epoch size is a good way to reduce the size of the data set.