script uCurl table data using regular expression to send to a database

Question

I have a device on my network that is posting data to an html page. I need to be able to collect the data from the page and insert it into my database so I can have historical

Answer 1

use C5:1<|C5:5<|C5:13 to identify the rows, then use look ahead [0-9]+(?=..) to capture only those digits

grep -Po '[0-9]+(?=[^0-9]+(C5:2<|C5:6<|C5:13))'

returns

290
1868
187