How to scrap table with multiple rows and colspans

Problem.

Url: https://www.whatmobile.com.pk/Samsung_Galaxy-J3-2017

Sitemap:
{"_id":"test","startUrl":["https://www.whatmobile.com.pk/"],"selectors":[{"id":"brands","type":"SelectorLink","parentSelectors":["_root"],"selector":"section:nth-of-type(2) a.lnk","multiple":false,"delay":0},{"id":"mobiles","type":"SelectorLink","parentSelectors":["brands"],"selector":"tr:nth-of-type(n+2) a.BiggerText","multiple":true,"delay":0},{"id":"build","type":"SelectorElement","parentSelectors":["mobiles"],"selector":"tr.RowBG2:nth-of-type(2) th.hdngArial.specs-subHeading, tr.RowBG2:nth-of-type(2) td.fasla,tr.RowBG1:nth-of-type(3) th.hdngArial, tr.RowBG1:nth-of-type(3) td.fasla,tr.RowBG1:nth-of-type(4) th.hdngArial, tr.RowBG1:nth-of-type(4) td.fasla,tr.RowBG1:nth-of-type(5) th.hdngArial, tr.RowBG1:nth-of-type(5) td.fasla,tr.RowBG1:nth-of-type(6) th.hdngArial, tr.RowBG1:nth-of-type(6) td.fasla,tr.RowBG1:nth-of-type(7) th.hdngArial, tr.RowBG1:nth-of-type(7) td.fasla,tr.RowBG1:nth-of-type(8) th.hdngArial, tr.RowBG1:nth-of-type(8) td.fasla","multiple":false,"delay":0}]}

How can i scrap this data like all build records in one column,Frequency records in other columns,processor,display records in other columns and so on.