Time Specification

Latest Mode

The 'latest' mode is specified as time=latest. In this mode only otherwise matching time series with at least one observation within [now-latestmaxage, now] will contribute to the result (see the latestmaxage query parameter). Note that regardless of mode, actual observations are included with the contributing time series iff the incobs query parameter is specified as true. Only header information is included by default.

Intervals Mode

In 'intervals' mode a sequence of intervals is defined from a specific base interval. Only otherwise matching time series with at least one observation within any of these intervals will contribute to the result. The mode is specified as time=EXPR where the different forms of EXPR are defined in the table below.

• t1, and t2 are ISO 8601 time strings of the form YYYY-MM-DDThh:mm:ss:Z
• p is an ISO 8601 duration of the form P[n]Y[n]M[n]DT[n]H[n]M[n]S where each [n] represents a non-negative integer. A component may be ommited if the corresponding [n] is 0. At least one component must have [n] > 0.

Form	Matching observation times
t1/t2	[t1,t2>
t1	Same as the previous form with t2 = t1 + 1 second.
Rn/t1/t2/p	[t1,t2> + n-1 repetitions of the same interval following one after the other with a gap of p between start times of successive intervals. Note: p must be large enough for the intervals not to overlap.
Rn/t1/p	Same as the previous form with t2 = t1 + 1 second.

Default Mode

If the 'time' query parameter is not not specified, all otherwise matching time series will contribute to the result, even time series without any observations at all.