The OP's link did give some information:
It does give a little information:
"A lower score is better, with ZERO being the perfect score. The bars above show the regions of the color spectrum where hue discrimination is low. "
"Your score: 6"
"•Your score: 6 •Gender: Male •Age range: 30-39 •Best score for your gender and age range: 0 •Highest score for your gender and age range: 1520"
It mentions it is the Farnsworth Munsell 100 Hue Test, which links to Wikipedia https://en.wikipedia.org/wiki/Farnsworth-Munsell_100_hue_tes...
The Wikipedia article links to a couple of images which indicate normality of the scale https://en.wikipedia.org/wiki/File:Farnsworth-Munsell3.png and
The OP's link did give some information:
It does give a little information:
"A lower score is better, with ZERO being the perfect score. The bars above show the regions of the color spectrum where hue discrimination is low. "
"Your score: 6"
"•Your score: 6 •Gender: Male •Age range: 30-39 •Best score for your gender and age range: 0 •Highest score for your gender and age range: 1520"
It mentions it is the Farnsworth Munsell 100 Hue Test, which links to Wikipedia https://en.wikipedia.org/wiki/Farnsworth-Munsell_100_hue_tes...
The Wikipedia article links to a couple of images which indicate normality of the scale https://en.wikipedia.org/wiki/File:Farnsworth-Munsell3.png and