create stable stb_jlszy (ts timestamp, liq_lvl_diff float, temperature float) tags (device_id varchar(50), device_name nchar(100), device_type nchar(100), line_name nchar(50), line_segment nchar(100), section_point nchar(100));
create stable stb_qxy (ts timestamp, lean_angle float, temperature float) tags (device_id varchar(50), device_name nchar(100), device_type nchar(100), line_name nchar(50), line_segment nchar(100), section_point nchar(100), height float);