The U.S. Geological Survey monitors and reports onearthquakes, providing dailyreal-time, worldwide earthquake lists. Some of the information for four of the 105 earthquakes of magnitude 1.5 or greater that occurred on May10, 2013, is shown in the following table. Magnitude is given on the Richter scale and NST stands for the number of stations that reported the activity on the same earthquake. Complete parts(a) through(e) below.

Time

Magnitude

Depth(km)

NST

Region

00:42:54

2.0

2.4

12

Nevada

00:56:36

2.4

11.9

10

Nevada

03:46:54

1.6

15.9

23

California

13:06:49

4.8

35.0

32

Indonesia

a. Identify the type of data provided by the information in the first column of the table. Also identify the variable under consideration.