=SI(OU(CNUM(TEMPS(HEURE($E2);MINUTE($E2);))=MAX(SI($D$2:$D$24=$D2;CNUM(TEMPS(HEURE($E$2:$E$24);MINUTE($E$2:$E$24);));""));CNUM(TEMPS(HEURE($E2);MINUTE($E2);))=MIN(SI($D$2:$D$24=$D2;CNUM(TEMPS(HEURE($E$2:$E$24);MINUTE($E$2:$E$24);));"")));"GARDER";"")