To test if we could see a day night rhythm in the utilization of IP spaces we used all ICMP records to generate a series of images that show the difference from daily average utilization per half an hour. We composed theses images to a GIF animation that clearly shows a day night rhythm. The difference between day and night is lower for US and Central Europe because of the higher number of "always on" Internet connections.

Found by BitBucket.Org - Internet Census 2012