When I run the " sh vpn-sessiondb detail" command on my asa 5520 it tells me the following:

Active Session Summary

Sessions:
                           Active : Cumulative : Peak Concurrent : Inactive
  SSL VPN               :       0 :          0 :               0
    Clientless only     :       0 :          0 :               0
    With client         :       0 :          0 :               0 :        0
  Email Proxy           :       0 :          0 :               0
  IPsec LAN-to-LAN      :       1 :         16 :               1
  IPsec Remote Access   :       2 :        702 :               4
  VPN Load Balancing    :       0 :          0 :               0
  Totals                :       3 :        718

License Information:
  IPsec   :    750    Configured :    750    Active :      4    Load :   1%
  SSL VPN :      2    Configured :      2    Active :      0    Load :   0%
                            Active : Cumulative : Peak Concurrent
  IPsec               :          4 :        741 :               6
  SSL VPN             :          0 :          1 :               1
    AnyConnect Mobile :          0 :          0 :               0
    Linksys Phone     :          0 :          0 :               0
  Totals              :          4 :        742

Tunnels:
               Active : Cumulative : Peak Concurrent
  IKE    :          3 :        718 :               5
  IPsec  :          4 :        810 :               6
  Totals :          7 :       1528

Active NAC Sessions:
  No NAC sessions to display

Active VLAN Mapping Sessions:
  No VLAN Mapping sessions to display
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however there are only two remote clients logged in and one site to site vpn configured at the moment.  So I was wondering why under tunnels it says the active IPsec count is 4?

Thank you.