trimmed awkward sentences

docs/statistics/statistics.rst

@@ -3,20 +3,19 @@ Statistics Page
 ===============
 
 On the Statistics page, you can check simple statistics related to the use of
-compute sessions via a graph. You can select the usage period for the last day
-or week from the range selection menu on the upper left. Items that can be
-inquired are as follows.
+compute sessions via a graph. You can check the statistics for a day or a week by selecting the usage period 
+from the select period menu on the upper left. Displayed items are as follows.
 
 * Sessions: The number of compute sessions created.
-* CPU: The number of CPU cores allocated while the compute session was created.
-* Memory: The amount of memory allocated while the compute session was created.
-* GPU: The number of GPU units allocated while the compute session was created.
+* CPU: The number of CPU cores allocated to the compute sessions.
+* Memory: The amount of memory allocated to the compute sessions.
+* GPU: The number of GPU units allocated to the compute sessions.
   If the Fractional GPU feature is enabled, it may not match the physics GPU.
 
-Note that only the statistics of terminated sessions will be displayed here.
-Also, week period may not be selectable by a user whose account is created not
+Note that the statistics shown here are based on terminated compute sessions.
+Also, one week statistics may not be shown for the users whose account is created no
 longer than a week.
 
 .. image:: usage_panel.png
 
-More detailed statistics can be found from the admin-only hub.
+More detailed statistics are shown in the admin-only hub.