the tea kettle boils. [ applause ] >> musician amy mon brought her guitar to one of the workshops as well. tonight students are enjoying steve martin and the controversial rapper/poet common. >>> for many travelers this doesn't come as a surprise, sfo is ranked dead last in terms of on time arrivals and departures. theibili visibility is to blame. mike mckaren was surprised by the ranking, he says on a clear day they can land 60 planes an hour compared to 30 planes an hour on a foggy day. they're hoping new technology, which is on its way, will help track planes and avoid late landings in bad weather. here's the list in terms of the best. dallas/ft. worth came in first and ronald reagan came in first place in terms of on time departures. >> wow. >>> today was a beautiful day to either leave on time or arrive on time, no matter how you put it. >> as long as it was an afternoon flight, if you were heading out this morning, that fog was pretty thick outside. right now the visibility has cleared out from oakland looking towards the city, a sweet view. current temperature is 60, winds wes