Query variables

Some variables are injected to your query, this is a list of availables ones.

Variables	Description	Doc
$end	The right limit of you graph (most recent timestamp) in µs
$start	The left limit of you graph (oldest timestamp) in µs
$interval	The time range of you graph ($end - $start) in µs
$__interval	Calculated using the time range and the width of the graph (the number of pixels)	link
$__interval_ms	Same as above in ms	link