It would be unfortunate if this were not fixed before the quarterly review tomorrow.
The missing zero results rate for 15-19 January 2016 was estimated. (See https://github.com/bearloga/branch/blob/master/zero%20results%20rate%20estimation/report.pdf for details.) This has been noted on the dashboard documentation.
Furthermore, we also deployed a mechanism for ensuring the KPI summary dashboard looks nice if the data is bad or missing.