PS1_SDSS_CRTS

Extending analysis from MacLeod+2010, MacLeod+2011, and MacLeod+2012, by extending S82 light curves to larger baselines with PS1, CRTS and PTF data. This is based on the findings of Kozlowski+2017 that we confirmed, namely that a longer baseline significantly reduces the bias in retrieval of quasar characteristic timescale and variability amplitude.