Quake dataset 1: Description. This data set contains information describing 2178 quakes. They are described using 4 different attributes: 1) Focal_depth: depth of the quake focus 2) Latitude: latitude of the quake 3) Longitude: longitude of the quake 4) Ritcher: level in the Ritcher Scale 2: Type. Unsupervised 3: Origin. Real world 4: Instances. 2178 5: Features. 4 6: Missing values. No 7: Header. @relation quake @attribute Focal_depth integer [0,656] @attribute Latitude real [-66.49,78.15] @attribute Longitude real [-179.96,180] @attribute Richter real [5.8,6.9] @inputs Focal_depth, Latitude, Longitude, Richter