Board Thread:Dark Souls II/@comment-70.67.23.54-20140906214718/@comment-5264386-20140907001436

The Russian Dark Souls Wikia has a Soul Memory summon range calculator for each of the Soapstones, in addition to all invasion items, which can be found here. The translations of the text are as follows:
 * "Предмет не выбран" = "The object is not selected"
 * "Память Душ" = "Memory Shower" (i.e. The player's Soul Memory)
 * "Диапазон Достyпных Игроков" = "Range of players" (approximately)

Clicking on each item provides a description, but it's pretty much just a description of what each one does, and what your purpose is as each type of phantom. The blue represents your Soul Memory tier, whilst the green represents the range which within which people can be summoned/invaded.