These surveys are useless really, The sampling is unlikely to be wide enough, and then, who, in this day and age of PC is going to admit : "I don't want darkies as neighbours".
Indians, yes generally quite prejudiced but it's more classist and caste based than race, Africans the same. Japanese, want to keep themselves racially pure but tolerate foreigners. Nigeria comes up as pretty intolerant, I guess that's a bilateral ...... France too.