values not showing correctly on a bar graph

[Fernando Linhares]

I´ve implemented a Sparkline inside a table using PHP and was able to generate the correct graphs I intended, but when I move the mouse over the graph elements to see the values the window opened is too small and does not show the number. How can I fix this?

Thanks!

Implementation on PHP:

                                //coloca gráfico da evolução

                                $valores=pega_historico($sigla,$row['materia'],agora(),3);

                                echo '<span class="graph'.$currentrow.'">Loading..</span>';

                                echo'<script type="text/javascript">';

                                echo'$(function() {;';

                                echo'myvalues=['.$valores[0].','.$valores[1].','.$valores[2].'];';

                                echo "$('.graph".$currentrow."').sparkline(myvalues, {type: 'bar', barColor: 'green'} );";

                                echo '});';

                                echo '</script></td>';

[stelli...@gmail.com]

I have the exact same issue on my site

https://wetter.teamstelling.de

Unfortunately I have not solution by now and deactivated the tooltips for now with 

disableTooltips: true

If somebody has an idea why this happens, it is much appreciated...