Why this Earthquake is important to us?

A 4.5R eathquake was reported today near Hokkaido in Japan, at the location shown below.

It is not the strongest of the day, but important to us as we experiment with new epicentre location methods. If you keep a good eye on this website you would have noticed that we posted yesterday a prediction about today's earthquake in Japan that we expected one at the location 44.86N 142.69E, as shown below.  Not perfect yet but good enough showing we can do it and we are on the right tracks for complete earthquake prognosis on time and location.

Magnitude	mb 4.5
Region	HOKKAIDO, JAPAN REGION
Date time	2016-04-28 07:12:18.4 UTC
Location	41.13 N ; 142.77 E
Depth	42 km
Distances	245 km SE of Sapporo-shi, Japan / pop: 1,883,027 / local time: 16:12:18.4 2016-04-28 174 km E of Aomori-shi, Japan / pop: 298,394 / local time: 16:12:18.4 2016-04-28 128 km NE of Hachinohe, Japan / pop: 239,046 / local time: 16:12:18.4 2016-04-28