def to_excel(self, *args):
        """
        Dump all the data to excel, fname and path can be passed as args
        """
        path = os.getcwd()
        fname = self.fname.replace(".ppl", "_ppl") + ".xlsx"
        if len(args) > 0 and args[0] != "":
            path = args[0]
            if os.path.exists(path) == False:
                os.mkdir(path)
        xl_file = pd.ExcelWriter(path + os.sep + fname)
        for idx in self.filter_data(""):
            self.extract(idx)
        labels = list(self.filter_data("").values())
        for prof in self.data:
            data_df = pd.DataFrame()
            data_df["X"] = self.data[prof][0]
            for timestep, data in zip(self.time, self.data[prof][1]):
                data_df[timestep] = data
            myvar = labels[prof-1].split(" ")[0]
            br_label = labels[prof-1].split("\'")[5]
            unit = labels[prof-1].split("\'")[7].replace("/", "-")
            mylabel = "{} - {} - {}".format(myvar, br_label, unit)
            data_df.to_excel(xl_file, sheet_name=mylabel)
        xl_file.save()