April Mac numbers -- recorded by the NPD Group -- suggest that Apple will sell between 3.1 and 3.2 million Macs by the end of its third quarter, according to Piper Jaffray analyst Gene Munster. The estimated range is based on a 39 percent increase in domestic sales during April, and could still vary dramatically based on May and June sales, as well as international markets. If Apple manages Munster's target, the quarter will represent a growth of 19 to 23 percent year-over-year.
