Column chart showing the decreasing number of clinics offering abortions at each gestational week. The largest drop in clinic availability is after the first trimester.
All weeks measured from the date of the last menstrual period. Some clinics indicate the gestational age in days (e.g. 11 weeks and 6 days); this chart rounds to the nearest week.

Source: INeedAnA.com
Chart: Jasmine MithaniThe 19th・19thnews.org