Friday (16.12.16): Peter Stefanovic is co-hosting with Lisa, in addition to reading sport, live aboard the Ovation of the Seas. Deborah Knight is in the studio reading the news (I honestly don't know how hard it is for them to understand that separating an already empty team makes for an awful show).
I think today will be Pete's last day anyway with Dickie probably co-hosting for the next two weeks. Tim McMillan will then likely co-host with Alicia/Sylvia until Karl and Lisa return in the third week of January.
That is likely to be the primary reason why Sunrise's audience rose. Today's decline is due to a number of reasons including; rotating door of Early News presenters from mid-year; decline in ratings for Nine News and Nine's prime time; bad PR and Karl absent quite frequently.