def dict_to_list(d):
    """ Convert dictionary to list

    parameters:
    d (dictionary)

    returns:
    list: list of data in columns format. (col 1, col 2 ... etc)
    """
    dict_key = list(d.keys())
    d_value = {}
    for value in d.values():
        counter = 0
        while counter < len(value):
            if counter not in d_value:
                d_value[counter] = [value[counter]]
            else:
                d_value[counter].append(value[counter])
            counter += 1
    list_d_value = list(d_value.values())
    return [dict_key] + list_d_value
