[CentOS] w command about user

Hi 
   
  I use w command to get user is "2 users" but I only have connection one
   
  ls any process dead? But I check other centos machine is same
   
  How can I check it?
   
  Thank you
   
   
  [root at host ~]# w
 7:22:26 up 20 days, 23:20,  2 users,  load average: 0.00, 0.00, 0.00
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
chloe   pts/0    dsl-203-18-20-82. 7:22    0.00s  0.09s  0.09s sshd: chloe [priv]

       
 
              
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