Hi Roger. I don’t know if this will be of any help to you, but the data I use is graded in 5 areas. The grades are A, B, C, and D.

The first area to be graded is the time of the quake.
The second is the latitude of the quake.
The third is the longitude of the quake.
The fourth is the magnitude of the quake.
The fifth area escapes me right now, but I’m sure I will get something in my e-mail telling me what it is.

In each and every case it is the data that is being graded and not I. On average there are over 220 data locations for quakes world wide per week. Each and every one of those are graded. Take Care…Don in creepy town