ID	      EXAM    MID-  FINAL
          moed A/B  TERM  GRADE
================================
11946506    NaN/66  NaN   66
33369893    NaN/56  67    58
34652370    62      60    62
36624781    NaN     NaN   NaN
36627834    94      97    95
37259181    57      NaN   57    
38175246    91      100   93
39093091    84	  58    84	
39169453    82/80   47    80
39230750    84      70    84
39252150    87/87   86    87
39767660    78/75   91    78
39808654    100     100   100
39962667    100     100   100
40319667    73/80   97    83  
40366312    81      69    81
40458143    86/93   90    93
40533325    76      94    81
43102730    69/74   50    74
43390947    38/49   47    49
46240362    90      93    91
60403805    NaN/50  NaN   50
61109575    75/85   69    85
61267480    47/46   53    48
65670838    90      93    91
65943912    72/86   96    88
66389628    100     76    100
66414608    68/95   93    95
66443904    71/76   NaN   76
200112043   100     100   100
200325777   96      96    96
300704665   NaN/82  NaN   82
300770252   83/95   73    95
304011398   96      93    96
306248881   60/50   88    58
306287624   76/84   61    84
306993825   83/80   97    83
307134270   NaN/31  NaN   31
308725571   56/87   NaN   87
308993658   75/56   68    58
309215366   NaN     NaN   NaN
311916548   95      72    95
314269713   51/76   74    76