Thanks pennyk and F900ElCapitan. I keep a copy of the chart handy to plan trips. Knowing in advance what the low bucket fares are makes it a little easier travel at minimum cost as my travel dates usually have a lot of flexibility. And posting a small section of it... ...makes it a little easier to explain the bucket system to someone new to train travel. Usually take a copy with me on the train in case somebody needs it 'splained to them.