Symbol        Date      Type         Value
518         ZW  2008-01-02        cm  1.204330e+09
519         ZW  2008-01-02   cm_next  1.209600e+09
520         ZW  2008-01-02       p&l  0.000000e+00
521         ZW  2008-01-02  position  0.000000e+00
522         ZW  2008-01-02  rolldate  1.203466e+09
523         ZW  2008-01-02     value  3.114788e+04
524         ZW  2008-01-02      vola  6.256606e+02
1046        ZW  2008-01-03        cm  1.204330e+09
1047        ZW  2008-01-03   cm_next  1.209600e+09
1048        ZW  2008-01-03       p&l  0.000000e+00
1049        ZW  2008-01-03  position  0.000000e+00
1050        ZW  2008-01-03  rolldate  1.203466e+09
1051        ZW  2008-01-03     value  3.202738e+04
1052        ZW  2008-01-03      vola  6.338274e+02
1574        ZW  2008-01-04        cm  1.204330e+09
1575        ZW  2008-01-04   cm_next  1.209600e+09
1576        ZW  2008-01-04       p&l  0.000000e+00
1577        ZW  2008-01-04  position  0.000000e+00
1578        ZW  2008-01-04  rolldate  1.203466e+09
1579        ZW  2008-01-04     value  3.162559e+04
1580        ZW  2008-01-04      vola  6.357563e+02
2102        ZW  2008-01-07        cm  1.204330e+09
2103        ZW  2008-01-07   cm_next  1.209600e+09
2104        ZW  2008-01-07       p&l  0.000000e+00
2105        ZW  2008-01-07  position  0.000000e+00
2106        ZW  2008-01-07  rolldate  1.203466e+09
2107        ZW  2008-01-07     value  3.066630e+04
2108        ZW  2008-01-07      vola  6.381839e+02

Symbol | Date | cm | cm_next | rolldate | p&l | position | [etc..]