The timeunit element has three attributes, unit and devider and multiplier. the unit is second, minute, hour, week, month year. The divider attribute is optional (default = 1). The timeZone (in decimal hours shift from GMT) e.g. -1.0 or 3.5. If not present GMT is assumed Type of data, either accumulative or instantaneous. For accumulative data the time/date of the event is the moment at which the data was gathered.