def chr_split_list(split_headers):
    """
    Gets chromosome info from split_headers.
    Args:
        split_headers (list): header list split into parts
    Returns:
        chr_list (list): list of chromosome values
    """
    chr_list = []
    for item in split_headers:
        if item[0]:
            new_item = item[0].split(":")
            chr_list.append(new_item)
    return chr_list