Fig. 9From: New results on the gravity monitoring (2014–2017) of Soultz-sous-Forêts and Rittershoffen geothermal sites (France)Rittershoffen gravity double differences in µGal. 95% confidence interval is highlighted in yellow and is centered on the mean survey value (red line). a We do not consider the gravity changes at the reference station 23 (blue dotted line); b accounting for itBack to article page