includes only conventional accumulations >= 1MMBO or 6BCFG                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
region province_num province_name                              play_num play_name                                                                                                                       geologists                      hypo_or_conf charge reservoir trap play_prob num_oil_disc num_gas_disc oil_depth_min oil_depth_max oil_depth_med gas_depth_min gas_depth_max gas_depth_med oil_fraction gas_fraction biogenic_gas? H2S? H2S_%  GOR   NGL/na_gas NGL/ad_gas API_min API_max API_mea sulfur_in_oil H2S_in_gas H2S_units type_I_org type_II_org type_III_org TOC   Ro_min Ro_max Ro_mean T_max  in_oil_window in_gas_window overcooked max_burial_depth paleo_grad oil_median_size gas_median_size oil_largest_at_5% gas_largest_at_5% oil_shape_factor gas_shape_factor oil_min_num gas_min_num oil_med_num gas_med_num oil_max_num gas_max_num 
     7           52 Iowa Shelf                                     5201 Middle Ordovician                                                                                                               Palacas, J. G.                  hypothetical   0.30      1.00 0.20      0.06            0            0