Mysql keep over 200 values in a row?
<p>A friend of mine is asking me for help. He wants to input datas into mysql and then generate a graph like this one:</p>

<p><a href="http://i.stack.imgur.com/slSUz.png" rel="nofollow">LineGraph example from Charts.js: http://www.chartjs.org/</a></p>

<p>There's only a problem: he wants 50 values for every line, in total there are 4 lines:</p>

<ul>
<li>Temperature</li>
<li>Humidity</li>
<li>Light</li>
<li>Co2</li>
</ul>

<p>It's over 200 values for every user, my question is: how can I make these values easily accessible?<br>
I thought I could make a table for every user but I know that the performance would suffer badly. </p>