FIG. 2: Evolution of the gap distribution with temperature. a , map of the local pairing temperature ( T$_{p}$ ). The pairing temperature is determined from the sequence of images in b - o by finding the temperature above which there is no maximum in the conductance on the positive bias side. b - o , a 25 x 28 nm “gap map” taken at several different temperatures showing the distribution of gaps in real space. At each temperature, the gap map has been aligned to allow point-by-point comparison between maps. or 2D false color images showing the spatial distribution of gaps, shown in figure 2b-o. Us- ing simultaneously recorded topographic infor- mation, we can align gap maps taken at differ- ent temperatures, despite their being taken over slightly different areas with varying amounts of thermal drift and piezo creep. This is accom- plished by interpolating the two dimensional data in order to maximize the agreement be- tween temperatures. To avoid biasing the re- 4 �������� �������� ����� � ������� ������ � � ������ ������ ������ ������ ������ ������ ������ ������ ������ ������ ������ ������ ������ ������