The tengu_derby_size.csv file contains information on the following fields (columns): year members (number of anglers who participated in the derby; not all anglers fished each day the derby was open) n_over_10 (total number of Chinok salmon greater than 10 pounds) n_over_5 (total number of Chinok salmon greater than 5 pounds) size_1 (mass in kg of the largest fish landed) size_2 (mass in kg of the second largest fish landed) size_3 (mass in kg of the third largest fish landed) size_4 (mass in kg of the fourth largest fish landed) size_5 (mass in kg of the fifth largest fish landed) The wdfw_size.csv file contains the following fields (columns): year mass (mean mass in kg of natural- and hatchery-origin Chinook salmon combined)