> It is not what I expected. > > 2.314e-05 multiplied by 86400 is close enough to 2, which is correct. > > But 1.5906e-05 multiplied by 86400 is 1.374... which doesn't make any > sense. It should be 2 again for that day. I think this may help: http://www.vandenbogaerdt.nl/rrdtool/process.php