select * from data where sn='1' and pq='gputemp' order by id desc limit 4
idsntspqvaluesystemts
20112516 1 gputemp 37.0 1555618645 Thu 18 04 2019 22:17:25
20112505 1 gputemp 36.5 1555618626 Thu 18 04 2019 22:17:06
20112500 1 gputemp 36.5 1555618624 Thu 18 04 2019 22:17:04
20112490 1 gputemp 37.0 1555618605 Thu 18 04 2019 22:16:45

Thu Apr 18 22:17:30 2019 by walley