Regular decrease in the atomic radius of 3d series While comparing atomic radius, two factors are important:

A. Decrease in size due to increase in effective nuclear charge

B. Increase in size due to increase in shielding effect

I was surprised to find a regular decrease in the atomic radius of 3d series elements on this site because that would mean that effective nuclear charge is dominating in case of each element more than shielding factor. 

http://crystalmaker.com/support/tutorials/crystalmaker/atomic-radii/index.html

I have also attached the screenshot of the values of atomic radii of 3d series elements(given in Angstrom).

On some previous stackexchange posts like this one

Variation in atomic sizes in the transition elements

I have found that from Ni to Zn there is a regular increase in size.

Are the values shown on this site wrong?
If yes, can you please provide the correct values.
 If not, can you please explain why shielding wouldn't be as effective as increase in nuclear charge?
Periodic Table Website confirms these atomic radii. 
So why does the atomic radius decrease? The nucleus of the atom gains protons moving from left to right, which increases the positive charge of the nucleus which attracts electrons. Although electrons are also added as the elements move from left to right across a period, these electrons reside in the same energy shell and therefore do not offer increased shielding.

Source: Periodic Trends