title: Color a cell where the sum of the row reaches a certain value
body: <p>I need to find out in which week a sum of working hours exceeds a certain amount of hours. I would like to color that certain cell.</p>
  
  <p><a href="https://i.stack.imgur.com/qGplE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qGplE.png" alt="enter image description here"></a></p>
  
  <p>Thanks in advance!
  Tim</p>