select * from data where sn='12250' order by id desc limit 4
idsntspqvaluesystemts
77767870 12250 temp 26.06 1750381802 Fri 20 06 2025 03:10:02
77767809 12250 temp 26.06 1750381502 Fri 20 06 2025 03:05:02
77767752 12250 temp 26.06 1750381202 Fri 20 06 2025 03:00:02
77767691 12250 temp 26.06 1750380902 Fri 20 06 2025 02:55:02

Fri Jun 20 03:10:58 2025 by walley