age category dep_time_str education end_activity_type end_hex_7 end_hex_8 end_hex_9 end_x end_y euclidean_distance fid hh_income home_hex_7 home_hex_8 home_hex_9 home_x home_y idmv idvc marital_status person personal_income sex start_activity_type start_hex_7 start_hex_8 start_hex_9 start_x start_y trav_time_str travel_mode traveled_distance trip_number