Active systems in 51 of 68 regions (75%): AB, AZ, BC, CO, CT, DC, DE, GU, HI, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MP, MT, NB, NC, ND, NE, NV, NH, NJ, NM, NS, NT, NY, OH, OK, ON, OR, PA, PE, RI, SD, TX, UT, VI, VT, WA, WI, WV, WY, YT
Preview systems in 10 of 68 regions (15%): AK, CA, GA, MB, NL, PR, QC, SC, TN, VA
Devel systems in 2.1 of 68 regions (3%): AS, FL, LA (a small part)
No systems in 4.9 of 68 regions (7%): AL, AR, LA (most), MS, SK