select * from data where sn='ds0' order by id desc limit 4
idsntspqvaluesystemts
29378614 ds0 temp 19.10 1576443825 Sun 15 12 2019 22:03:45
29378613 ds0 hum 42.20 1576443822 Sun 15 12 2019 22:03:42
29378596 ds0 hum 42.10 1576443800 Sun 15 12 2019 22:03:20
29378594 ds0 hum 42.70 1576443800 Sun 15 12 2019 22:03:20

Sun Dec 15 22:04:05 2019 by walley