[['class', 'wheel arrangement', 'fleet number (s)', 'manufacturer', 'serial numbers', 'year made', 'quantity made', 'quantity preserved'], ['mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives'], ['z', '2 - 6 - 6 - 2', '3000 - 3015', 'baldwin', '30566…31557', '1907', '16', '0'], ['z - 1', '2 - 6 - 6 - 2', '3100 - 3105', 'baldwin', '34389…34483', '1910', '6', '0'], ['z - 2', '2 - 8 - 8 - 2', '4000 - 4004', 'baldwin', '34382 - 34386', '1910', '5', '0'], ['z - 3', '2 - 8 - 8 - 2', '4005 - 4025', 'alco', '52839…62472', '1913 , 1917 , 1920', '21', '0'], ['z - 4', '2 - 8 - 8 - 2', '4500 - 4503', 'alco', '64373 - 64376', '1923', '4', '0'], ['z - 5', '2 - 8 - 8 - 4', '5000', 'alco', '67578', '1928', '1', '0'], ['z - 5', '2 - 8 - 8 - 4', '5000 - 5011', 'baldwin', '61292…61495', '1930', '11', '0'], ['z - 6', '4 - 6 - 6 - 4', '5100 - 5120', 'alco', '68760 - 68780', '1936 - 1937', '21', '0'], ['z - 7', '4 - 6 - 6 - 4', '5121 - 5126', 'alco', '69540 - 69545', '1941', '6', '0'], ['z - 8', '4 - 6 - 6 - 4', '5130 - 5149', 'alco', '70143…71962', '1943 - 44', '20', '0']]
the highest Quantity Made was manufactured by Alco which is the Class Z - 3 and Class Z - 6
the highest [ENT] was manufactured by [ENT] which is the [ENT] [ENT] and [ENT] [ENT]