While we all wait for the FCC to approve the spectrum transfer that's a result of AT&T's failed bid to purchase T-Mobile, GigaOM has posted a map created by reader Andrew Shepherd of exactly where that spectrum will be. AT&T dropped large blocks in California, Arizona, and the Seattle area, Shepherd found, but also understandably made sure to keep enough spectrum in key areas to ensure its LTE network wouldn't be significantly hurt. If you're a T-Mobile customer in one of the highlighted areas, you should hopefully see improved service in the not-too-distant future. It all adds up to $1 billion worth of spectrum, which is in addition to $3 billion in cash and a seven-year roaming agreement.