Data from the continuous evaluation survey about Wikimedia Deutschlands volunteer support services (German: <a href="https://en.wikipedia.org/wiki/de:Wikipedia:Wikimedia_Deutschland/F%C3%B6rderbarometer" class="extiw" title="w:de:Wikipedia:Wikimedia Deutschland/Förderbarometer">"Förderbarometer"</a>). Data reflects the mean satisfaction (red) and helpfulness (blue) ratings by the recipients of the supports  (scale: 0 - 10, mean value per quarter). Time period March 2017 - February 2019,  ~ 450 feedbacks received per year.
<a href="//commons.wikimedia.org/wiki/User:Christof_Pins_(WMDE)" title="User:Christof Pins (WMDE)">Christof Pins (WMDE)</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>