Hello, i don't use phone clicks and premium ads.
when i remove this code from graph:
, {
          yAxis: 0,
          name: '<?php echo osc_esc_js(__('Premium', 'veronika')); ?>',
          data: [<?php echo $premium; ?>],
          tooltip: {
            valueSuffix: 'x <?php echo osc_esc_js(__('viewed', 'veronika')); ?>'
          }
        }, {
          yAxis: 1,
          name: '<?php echo osc_esc_js(__('Phone Clicks', 'veronika')); ?>',
          data: [<?php echo $clicks; ?>],
          tooltip: {
            valueSuffix: 'x <?php echo osc_esc_js(__('clicked', 'veronika')); ?>'
          }
        }
Then the chart looks like in the image, the graph is in the middle instead at bottom how can i fix this?

@oscman
Why it should be in bottom? as far as I know, 0 value is not least value. There is -1, -2, ... -9999, as well as greater like 1, 5, 99.
Therefore it is correct that chart display it at middle.
I would recommend to add at least 1 view when chart will use full height of area.

I didn't understand what do you mean? the values does what change the position? what are this values in yAxis?

@oscman
On your chart I can see just 0 value.