select * from data where sn='12250' order by id desc limit 4
idsntspqvaluesystemts
72287294 12250 temp 21.38 1713506702 Fri 19 04 2024 08:05:02
72287233 12250 temp 21.31 1713506402 Fri 19 04 2024 08:00:02
72287176 12250 temp 21.25 1713506102 Fri 19 04 2024 07:55:02
72287115 12250 temp 21.19 1713505802 Fri 19 04 2024 07:50:02

Fri Apr 19 08:05:08 2024 by walley