Fig. 1

Scheme of the pig stable. The numbers indicate the 5 areas of sedimentation dust sample withdrawal (1. window sill, 2. grid above the tub, 3. grid above the lying area, 4. gutters in front of the tub and 5. bay barrier on the other side of the stable), and “P” shows the positions of air samplings. Bay 1 was used for all experimental setups