Modifies column header format to be importable into a database
        :param column: raw column header
        :return: cleanedcolumn: reformatted column header

def columnclean(column):
        """
        Modifies column header format to be importable into a database
        :param column: raw column header
        :return: cleanedcolumn: reformatted column header
        """
        cleanedcolumn = str(column) \
            .replace('%', 'percent') \
            .replace('(', '_') \
            .replace(')', '') \
            .replace('As', 'Adenosines') \
            .replace('Cs', 'Cytosines') \
            .replace('Gs', 'Guanines') \
            .replace('Ts', 'Thymines') \
            .replace('Ns', 'Unknowns') \
            .replace('index', 'adapterIndex')
        return cleanedcolumn