title: Google charts showing wrong numbers on left side
body: <p>Databse query</p>
  
  <pre><code>$result = $polaczenie-&gt;query("SELECT data, SUM(uslugi.cena) FROM wizyty, uslugi WHERE wizyty.iduslugi = uslugi.iduslugi AND status = 'Zakończona' GROUP BY data") or die($polaczenie-&gt; error);
  </code></pre>
  
  <p>Chart</p>
  
  <pre><code>&lt;script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"&gt;&lt;/script&gt;
          &lt;script type="text/javascript"&gt;
            google.charts.load('current', {'packages':['corechart']});
            google.charts.setOnLoadCallback(drawChart);
  
            function drawChart() {
              var data = google.visualization.arrayToDataTable([
                ['data', 'cena'],
                &lt;?php
                  if(mysqli_num_rows($result)&gt;0){
                      while($row = mysqli_fetch_array($result)){
                          echo "['".$row['data']."', ['".$row['SUM(uslugi.cena)']."']],";
                      }
                  }
                  ?&gt;
              ]);
  
              var options = {
                title: 'Utarg',
                hAxis: {title: 'data',  titleTextStyle: {color: '#333'}},
                vAxis: {minValue: 0}
              };
  
              var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
              chart.draw(data, options);
            }
          &lt;/script&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/YK4bp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YK4bp.png" alt="enter image description here"></a></p>
  
  <p>My problem is why there is no proper scale for 'cena' on the left of chart?
  There are only random numbers. How i can fix that? 'cena' column in database is integer type if that helps.</p>