For each wave buoy we keep two record sets: an hour record and the long-range 6 hourly one.

Wave buoys nearest to Katagai:
1.	Kashima Port	last 18 hours, hourly	last 5 days, each 6hr	30 mi
2.	Dainikaiho	last 18 hours, hourly	last 5 days, each 6hr	44 mi
3.	Yokohama, Keihin Port	last 18 hours, hourly	last 5 days, each 6hr	47 mi
4.	Ashika Island/Kurihama	last 18 hours, hourly	last 5 days, each 6hr	47 mi
5.	Hitachinaka,Ibaraki Port	last 18 hours, hourly	last 5 days, each 6hr	60 mi