Fig. 2From: An open-access stress magnitude database for Germany and adjacent regionsStress magnitude indicators. Overview of indicators relevant to the stress magnitude database of Germany and adjacent regions. HF hydraulic fracturing, HTPF hydraulic testing of pre-existing fractures, (X)LOT (extended) leak-off test, FIT formation integrity test, BO borehole breakout, \(\sigma _n\) normal stress, \(\sigma _3\) minimum principal stressBack to article page