select * from data where sn='NAVenku' and pq='temp' order by id desc limit 4
idsntspqvaluesystemts
21720463 NAVenku temp 28.4 1561537308 Wed 26 06 2019 10:21:48
21720098 NAVenku temp 28 1561536694 Wed 26 06 2019 10:11:34
21719743 NAVenku temp 27.6 1561536077 Wed 26 06 2019 10:01:17
21719391 NAVenku temp 27.3 1561535513 Wed 26 06 2019 09:51:53

Wed Jun 26 10:37:53 2019 by walley