attname   | null_frac | avg_width | n_distinct |                                   most_common_vals                                   |                                           most_common_freqs                                           |                                                                                                                                                         histogram_bounds                                                                                                                                                         | correlation 
-------------+-----------+-----------+------------+--------------------------------------------------------------------------------------+-------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------
 id          |         0 |         4 |         -1 |                                                                                      |                                                                                                       | {24,7079,13389,17624,21084,24392,25876,28033,29895,32132,33866}                                                                                                                                                                                                                                                                  |    0.801686
 checkdate   |         0 |         8 |         -1 |                                                                                      |                                                                                                       | {"2002-10-19 10:59:54.399+03","2003-03-03 05:00:25.359+02","2003-03-29 05:00:28.382+02","2003-04-01 05:01:00.065+03","2003-04-11 05:01:27.234+03","2003-04-29 05:00:41.318+03","2003-04-29 05:01:24.084+03","2003-04-30 05:00:40.719+03","2003-04-30 05:01:06.203+03","2003-04-30 05:01:25.435+03","2003-04-30 05:01:46.636+03"} |    0.923726
 assettable  |         0 |        11 |          1 | {vessels}                                                                            | {1}                                                                                                   |                                                                                                                                                                                                                                                                                                                                  |           1
 assetidval  |         0 |         4 |         18 | {53,57,48,65}                                                                        | {0.136667,0.107333,0.100333,0.0766667}                                                                | {20,26,29,32,33,35,44,47,49,61,74}                                                                                                                                                                                                                                                                                               |    0.117431
 appname     |         0 |        11 |          6 | {"ISM PMS",Class.Certificates,Class.Surveys,Repairs,Class.CMS,Class.Recommendations} | {0.989333,0.005,0.00266667,0.00166667,0.000666667,0.000666667}                                        |                                                                                                                                                                                                                                                                                                                                  |    0.990286
 apptblname  |         0 |         9 |          5 | {items,certificates,surveys,repdat,recommendations}                                  | {0.99,0.005,0.00266667,0.00166667,0.000666667}                                                        |                                                                                                                                                                                                                                                                                                                                  |    0.975883
 apptblidval |         0 |         4 |       5002 | {7161,11099,7162,12392,2819,8346,12241,12465,14932,17007}                            | {0.002,0.002,0.00166667,0.00166667,0.00133333,0.00133333,0.00133333,0.00133333,0.00133333,0.00133333} | {7,5016,8296,12443,14443,17115,20166,21996,22866,24209,32796}                                                                                                                                                                                                                                                                    |   0.0604367
 colname     |         0 |        14 |          6 | {lastrepdate,lastinspdate,rh,N/A,status,classsurvey}                                 | {0.660667,0.298667,0.03,0.00833333,0.00166667,0.000666667}                                            |                                                                                                                                                                                                                                                                                                                                  |     0.38036
 colval      |         0 |         8 |  -0.433074 | {0,1,1624,3742,146,594,864,915,125,224}                                              | {0.009,0.00166667,0.00166667,0.00133333,0.001,0.001,0.001,0.001,0.000666667,0.000666667}              | {21,14463.947,14498.65,18031.762,18043.58,18051.517,18059.712,18067.688,18078.67,21646.39,82811594.146}                                                                                                                                                                                                                          |    0.288656
 status      |         0 |         8 |          2 | {warn,alarm}                                                                         | {0.55,0.45}                                                                                           |                                                                                                                                                                                                                                                                                                                                  |    0.401053
 isvalid     |         0 |         1 |          2 | {f,t}                                                                                | {0.650667,0.349333}                                                                                   |                                                                                                                                                                                                                                                                                                                                  |    0.944827
 username    |         0 |        12 |          7 | {periodic,ckaklaman,amantzio,secretuser,mitsios,lignos,birtsia}                      | {0.886333,0.0546667,0.0336667,0.012,0.0116667,0.001,0.000666667}                                      |                                                                                                                                                                                                                                                                                                                                  |    0.805608
(12 rows)