select * from data where sn='ds0' order by id desc limit 4
idsntspqvaluesystemts
22759278 ds0 hum 70.00 1563674642 Sun 21 07 2019 04:04:02
22759277 ds0 temp 21.40 1563674642 Sun 21 07 2019 04:04:02
22759267 ds0 hum 70.10 1563674621 Sun 21 07 2019 04:03:41
22759266 ds0 temp 21.50 1563674621 Sun 21 07 2019 04:03:41

Sun Jul 21 04:04:34 2019 by walley