Spikekills on cacti 1.2.15

[Carbosk]

Hello all,
I thank you all the Cacti staff for the great work.

Unfortunatelly, I have big problem to work with spikekills plugin. I had big
problem with cacti 1.2.3, with cacti 1.2.14 and now with cacti 1.2.15.

It's my fault.
I have three spikes in my graph. I set cacti web page as I am showing you but nothing happens.
I launch via consolle the removespikes.php script with all options but It shows me "No spikes found".

/opt/cacti/var/www/html/cacti-1.2.15/cli/removespikes.php --rrdfile=/opt/cacti/var/www/html/cacti-1.2.15/rra/b_customer3_wind_traffic_in_66.rrd --method=stddev --avgnan=last --stddev=1 --percent=30 --number=2 --debug
....

NOTE: NO Standard Deviation found in '/opt/cacti/var/www/html/cacti-1.2.15/rra/b_customer3_wind_traffic_in_66.rrd'

NOTE: No Spikes Found. No remediation performed.

Could you please tell me where I am wrong or give me some suggestions?

Thank you in advance
Regards
Stefano

[TheWitness]

That looks like real traffic to me. Those are not spikes.