SUMIF not returning the expected result
<p>I want to sum the content of some cells only if the corresponding label correspond to a given string.</p>

<p>I used the following formula in B1<code>=SUMIF($E$1:$E$6,"LEFT(E1,13)=A1",$F$1:$F$6)</code></p>

<p>but the result is not what I expect</p>

<p><a href="https://i.stack.imgur.com/Pdabh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Pdabh.png" alt="enter image description here"></a></p>