Variable	Definition	Variabletype	Measurement
"Trade Flows "	"the monetary value of exports of fish between countries  and  at time "	"Continuous "	"US$"
"Distance"	"Shortest geographical distance between trading countries"	"Continuous"	"Kilometer"
"Exporter's GDP"	"GDP for the exporting country (country i)"	"Continuous"	"US$"
"Importer's  GDP"	"GDP for the importing country (country j)"	"Continuous"	"US$"
"Exporter's Population"	"population of the exporting (country i)"	"Continuous"	"Number "
"Importer's  Population"	"population of the importing (country j)"	"Continuous"	"Number"
"Exporter's Fish production"	"Fish production of the exporting country (country i)"	"Continuous"	"Tonnes"
"Importer's Fish production"	"Fish production of the importing country (country j)"	"Continuous"	"Tonnes"
"Exporter's Fish price"	"Fish price of the exporting country (country i)"	"Continuous"	"US$/Kg"
"Importer's Fish price"	"Fish price of the importing country (country j)"	"Continuous"	"US$/Kg"
"Real Exchange rate"	"Bilateral real exchange rate"	"Continuous"	"Conversion"
"Common Border"	"Trading counties sharing a common border"	"Dummy"	"Dummy"
"Common colony"	"Trading countries colonized by same colony"	"Dummy"	"Dummy"
"Common language "	"Trading countries sharing a common language (English and French)"	"Dummy"	"Dummy"
"bothSADC"	"Trade flow between members of SADC"	"Dummy"	"Dummy"
"bothEAC"	"Trade flow between members of EAC"	"Dummy"	"Dummy"
"bothECOWAS"	"Trade flow between members of ECOWAS"	"Dummy"	"Dummy"
"bothCOM"	"Trade flow between members of COMESA"	"Dummy"	"Dummy"
"bothECCAS"	"Trade flow between members of ECCAS"	"Dummy"	"Dummy"
"bothMAG"	"Trade flow between members of AMU"	"Dummy"	"Dummy"
"onlySADC"	"Trade flow between members of SADC and non members"	"Dummy"	"Dummy"
"onlyEAC"	"Trade flow between members of EAC and non members"	"Dummy"	"Dummy"
"onlyECOWAS"	"Trade flow between members of ECOWAS and non members"	"Dummy"	"Dummy"
"onlyCOM"	"Trade flow between members of COMESA and non members"	"Dummy"	"Dummy"
"onlyECCAS"	"Trade flow between members of ECCAS and non members"	"Dummy"	"Dummy"
"onlyMAG"	"Trade flow between members of AMU and non members"	"Dummy"	"Dummy"