select * from data where sn='ds0' and pq='hum' order by id desc limit 4
idsntspqvaluesystemts
39737300 ds0 hum 69.10 1594695773 Tue 14 07 2020 05:02:53
39737288 ds0 hum 69.20 1594695751 Tue 14 07 2020 05:02:31
39737272 ds0 hum 69.20 1594695729 Tue 14 07 2020 05:02:09
39737260 ds0 hum 69.20 1594695707 Tue 14 07 2020 05:01:47

Tue Jul 14 05:02:57 2020 by walley