[['ngc number', 'object type', 'constellation', 'right ascension ( j2000 )', 'declination ( j2000 )', 'apparent magnitude'], ['2516', 'open cluster', 'carina', '07h58 m', ' degree45′', '3.8'], ['2535', 'spiral galaxy', 'cancer', '08h11 m13.6s', ' degree12′24″', '13.0'], ['2536', 'spiral galaxy', 'cancer', '08h11 m16.1s', ' degree10′45″', '14.5'], ['2537', 'irregular galaxy', 'lynx', '08h13 m14.6s', ' degree59′30″', '11.7'], ['2541', 'spiral galaxy', 'lynx', '08h14 m40.4s', ' degree03′42″', '13.0'], ['2546', 'open cluster', 'puppis', '08h12 m', ' degree37′', '6.5'], ['2547', 'open cluster', 'vela', '08h10 m25.7s', ' degree10′03″', '4.8'], ['2548', 'open cluster', 'hydra', '08h14 m', ' degree45′', '6.1'], ['2549', 'lenticular galaxy', 'lynx', '08h18 m58.4s', ' degree48′10″', '12.1'], ['2550', 'spiral galaxy', 'camelopardalis', '08h24 m33.9s', ' degree00′43″', '13.1'], ['2551', 'spiral galaxy', 'camelopardalis', '08h24 m50.5s', ' degree24′44″', '12.7'], ['2552', 'irregular galaxy', 'lynx', '08h19 m19.6s', ' degree00′28″', '13.5']]
the Puppis and Vela Constellation are both listed only 1 time , all of the others are listed more than 1 time
the [ENT] and [ENT] [ENT] are both listed only 1 time , all of the others are listed more than 1 time