These are calibrated amplitude strain spectra plotted at different times for LIGO Livingston interferometer on a single plot. The raw text data for strain and displacement is available from other DCC documents linked below. These spectra are in the process of being reviewed and should be considered preliminary.
These plots were made using a preliminary calibration procedure that is in the process of being reviewed for accuracy. Since it is currently being reviewed, the calibration uncertainty the calibration group is quoting at this time is a factor of 2.
The same calibration procedure was applied to all curves on this plot, so the relative accuracy of the overall calibration scale is estimated to be much better than a factor of 2.