What is the column value in v$sesstat & v$sysstat

hi guys,
i don't understand what this VALUE is even after reading the documentation.
What does it refering when it mention statistic value?

flaskvacuum wrote:
SID USERNAME                       STATISTIC                                                     VALUE
94 ORACLE PROC                    physical read total bytes                                          15110144
94 ORACLE PROC                    physical reads                                                      420
94 ORACLE PROC                    physical reads cache                                                420
94 ORACLE PROC                    physical reads cache prefetch                                        12
94 ORACLE PROC                    physical write total IO requests                                    936
94 ORACLE PROC                    physical write total bytes                                         14712832
94 ORACLE PROC                    pinned cursors current                                                8what it mean? on the value....This statistics means that the session has read ~15MB (15 110 144 bytes) from disk, in 420 go's, written totally just under 15MB (14 712 832 bytes) to disk in 936 requests.
It has also pinned 8 cursors.
HtH
Johan

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