How to interpret tSmoke values?

Using smokeping.cgi I can see in a weekly report something like:

Median Ping RTT (160.4 ms avg)
Packet Loss: 67.74%  average   100.00%  maximum    11.03% current
Probe: 10 ICMP Pings (7300 bytes) Every 1800 seconds

BUT with tSmoke the same host returns:
Uptime: 6.19%

I don't know exactly how to interpret this value (6.19%).

Thanks

Edinilson
---------------------------------------------------------
ATINET-Professional Web Hosting
Tel Voz: (0xx11) 4412-0876
http://www.atinet.com.br