data.</p>
<div class="figure" style="text-align: center"><span id="fig:roqua"></span>
<img src="images/instruments/roqua/roqua_p1.jpg" alt="Screenshots of the participant feedback web-page of the 'HowNutsAreTheDutch' project, in which data is collected by the RoQua system" width="25%" /><img src="images/instruments/roqua/roqua_p2.jpg" alt="Screenshots of the participant feedback web-page of the 'HowNutsAreTheDutch' project, in which data is collected by the RoQua system" width="25%" /><img src="images/instr