It depends on how your csv file looks like.
Post a few lines of the file here.
        
        
     
An exemple with few lines of the file "api.csv" (with head) :
"libelle_parametre";"resultat_alphanumerique";"limite_qualite_parametre";"reference_qualite_parametre"
"Chlore total";"0,92";"";""
"pH";"7,6";"";">=6,5 et <=9 unité pH"
"Chlore libre";"0,91";"";""
"Bact. aér. revivifiables à 36°-44h";"<1";"";""
"Perchlorate";"7,5";"";""
"Ammonium (en NH4)";"<0,050";"";"<=0,1 mg/L"