I don't understand that chart. I'm a New Yorker and was fishing in Maryland just last week. I went to a Wal-Mart to buy my license. The clerk pulled out a chart just like the one you referenced and told me that the fee for New Yorkers was $35 for either a 3-day or a 7-day and said "you may as well get the 7-day then". I forked over the $35, plus another $10 for a trout stamp.

After reading the Maryland F & G web site, I saw that the non-Resident fees were a lot less than what I had paid. I emailed F & G and they confirmed that the non-resident fee was $5 for the 3-day and $7.50 for the 7-day license.