A result from the above site reading "0.0029". The text underneath reads: "Okay this is genuinely impressive. You're well below the standard JND of 0.02. The CIE should be sending you a job offer. Or at least a certificate."
I think this is part screen you're looking at and part your own eyes but I have not gotten better than my 1st attempt lol
www.keithcirkel.co.uk/whats-my-jnd...