Below I have attached my data, For the first question i think the mininum spacing depends on how much pressure is applied, because in my data for my forearm I got everything correct while on my hand and finger I got some wrong. These results are related to tactile acuity because some parts are more sensitive than others, such as the fingertips. I found the results suprising because I thought I would've done worse on my forearm and better on my finger tips. I think some body parts have better tactile acuity because some places have more touch receptors while others dont.