Fig. 4. The daily rainfall at Tvärminne weather station (in Hanko, Finland) (A), and the water content at 0.3 m below ground surface (bgs) (B) and 1.1 m bgs (C), electric conductivity at 1.1 m bgs (D), at 1.9 bgs (E) and at 2.3 m bgs (F) in the vicinity of point G17 at the Trollberget site as measured continuously from 27.6. to 12.7.2004. Electrical conductivity (G), temperature (H), hydraulic head (I), pH (J) and redox-potential (K) in the ground water as measured continuously in the piezometer DEMOGM20 during 27 June to 12 July 2004 at the Trollberget site. The depths of each sensor in the soil and in the piezometer are indicated.