What was the lowest home attendance for the southern derby?
{'header': ['Competition', 'Record', 'Result', 'Home Matches', 'Home Attendance', 'Avg. Home Attendance'], 'page_title': '2007 Carolina RailHawks FC season', 'section_title': '2007 Competitions', 'caption': '2007 Competitions', 'rows': [['USL First Division Regular Season', '8-12-8', '8th Place', '14', '71735', '5124'], ['USL First Division Playoffs', '0-2', 'Quarterfinals', '1', '923', '923'], ['US Open Cup', '4-1', 'Semifinals', '4', '13447', '3362'], ['Southern Derby', '3-0-1', 'Champion', '2', '9587', '4794'], ['Exhibitions', '1-1-0', 'N/A', '2', '13705', '6853']]}