### CONTEXT (Previous Events):
<system_output timestamp="684.186475">I: Configuring vim-tiny...
</system_output>
<system_output timestamp="684.325733">I: Configuring fdisk...
</system_output>
<system_output timestamp="684.359078">I: Configuring libcwidget4:i386...
</system_output>
<system_output timestamp="684.395451">I: Configuring libgssapi-krb5-2:i386...
</system_output>
<system_output timestamp="684.454118">I: Configuring aptitude...
</system_output>
<system_output timestamp="684.545056">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="684.582297">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="684.628499">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="684.682091">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="684.968712">I: Configuring iproute2...
</system_output>
<system_output timestamp="685.23388">I: Configuring isc-dhcp-client...
</system_output>
<system_output timestamp="685.466965">I: Configuring ifupdown...
</system_output>
<system_output timestamp="686.082516">I: Configuring libc-bin...
</system_output>
<system_output timestamp="686.187391">I: Base system installed successfully.
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="686.364668">Creating base.tar.xz
</system_output>

Answer: 686.364668, old event