The density of the least-squares fit values for systematic noise basic vector coefficients ﹩{\hat{c}}_{i}^{1}﹩ obtained for raw light curves {﹩{{\boldsymbol{y}}}_{i}﹩} from CCD module 8 during Kepler observing quarter 2; superscript 1 denotes the first element of each coefficient vector. A Gaussian prior was fitted to the histogram and is shown as an overlay. The fitted prior is very broad due to a number of small outlier values as discussed in the text. The plots for other coefficient indexes (equivalently basis vector indexes) are similar in functional form.