If it wasn't a hard request, then why are you asking and not figuring it out on your own? 
Its not easy to answer as the average person wouldn't really know how may clicks within that dial actually change the speed of the fan. You would need something to measure either the fan speed at each click to determine if each click was indeed an increase, or just a gap between the next actual speed adjuster. Or, you would need to meter voltage/ohms from the AC amp output to see thew step changes.
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2015 370z Nismo 7AT. Tein Flex Coilovers, Stillen Gen 3 Intake, Fast Intentions Test Pipes and Exhaust, APR Splitter, Vossen CV5 Wheels, Tuned by Seb
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