|  | Dark vs. light | With lights on | With lights off |
---|---|---|---|---|
Level of activity | Distance traveled and speed | Longer distances | Increase with stone density | Remains high |
Temporal structure | # of stops and trips | More stops and trips | More stones = more stops and trips | Â |
 | Trip length | Shorter trips | More stones = sorter trips |  |
 | Stops/trip | Fewer stops/trip | Did not change | Decreased |
Spatial distribution | Path shape | Winding (zigzag) paths | More stones = straighter path | Â |
 | Time and stops at the perimeter | More time and stops in center | More stones = more time and stops in center |  |