notes.husk.org/likes images.

54112067213

according-to-philips-streetlights-along-the-a7

“According to Philips, streetlights along the A7 from Purmerend (just north of Amsterdam) to Wognum are dimmed 50% after 9 pm. The system was switched on in early 2013, so any change should be visible in 2012 vs. 2013 data” (via From Tweet Density to Satellite Remote Sensing : Elegant Figures : Blogs)