Yii2 Undefined index

Good day! Tell me, please, my brain does not want to work anymore ...

Using ArrayHelper :: map (), I bring my data to the $ hasanArray array

Array ( [N] => 12 [R] => 16 [S] => 21 ) 

The array has exactly this form - infa 100%

Then i try to refer to him

 if ($hasanArray['R'] > $AVG['R'] + $sqr['R']) 

Then get

 Undefined index: R 

Any ideas?

Code:

 $query = 'SELECT pmh.scale, SUM(pht.value) as value FROM psy_hasan_tmp pht JOIN psy_mdl_hasan pmh' . ' ON pmh.question_id = pht.question WHERE pht.userid = :user GROUP BY pht.userid, pmh.scale'; $hasanArray = ArrayHelper::map(MdlPDOResults::findBySql($query, [':user' => $user])->asArray()->all(), 'scale', 'value'); $hasanStr = ''; if ($hasanArray['R'] > $AVG['R'] + $sqr['R']) $hasanStr .= 'V'; elseif ($hasanArray['R'] < $AVG['R'] - $sqr['R']) $hasanStr .= 'N'; else $hasanStr .= 'S';