It started out slowly for quite some time before it jolted the building a bit before slowing down again. It was another after-shock. This time 5.9 in magnitude at the epicenter located between Tochigi-ken and Ibaraki-ken. Here in Tokyo it was around 4 on the JMA seismic intensity scale.
It seems as if the after-quakes are becoming less and less intense! 🙂
Yes, frequency is going down but there are still a few. But much less of them are affecting Tokyo now.