Daytime news broadcasts are often quite fascinating. Not for news, which they generally lack, but for the bizarre and unsettling combination of gruesome fatal accidents or murder stories with the cheery talk about other goings-on and weather. The juxtaposition can produce a disturbing effect that David Lynch can only envy. But Channel 10, the local ABC affiliate, takes its daytime seriously. Anchoring the show is the best name in television news, Diane Magnum, a polished veteran with a strong background in reporting. From the first moment, you realize you're in relatively capable and serious hands. Once past Magnum, the program has its secret weapon: Glenna Milberg, who may not be a journalistic heavy hitter but who knows her way around a story and almost always does a solid job. While Jildah Unruh plays the role of Channel 10's take-no-prisoners investigator, Milberg is its balanced professional -- and her touch especially feels right during those live daytime reports under the noontime Florida sun. What you end up getting isn't just traffic and weather but political news and, quite often, an in-depth report on the most interesting story of the day. It's good enough that you can barely believe it's only noon.