query_range problem

[buxiangshangban1]

Could you please help me solve this? The data in the prome database is as follows:... t1-10m,v0; t1,v1; t1+10m,v2... The start and end times of my query range are t1 and t1 + 10m, with a step of 61s. Why is the query result only one: t1 + 61s, v1, instead of t1 + 61s, v1; t1+122s,v1; t1+183s,v1; ...

[buxiangshangban1]

There is another situation. ,t1-10m,v0; t1,v1; t1+10m,v2... Within the start and end time range of query_range, there is only one time point t1 included, and it is more than 3 minutes apart from the previous and next time points. With a step of 61 seconds, only two data points are retrieved at this time: t2, v1; t2 + 61, v1.
To sum up the two cases, is there a time threshold between the output result and the most recent time point in the prome database? Beyond this threshold, the result will not be output