query about the order of proposals generated by rpn101

[motoight]

Hi, I am following your nice work. I got a little confused that how to use your rpn101 proposals in https://drive.google.com/drive/folders/1rV6jJxbiELT4GNvfDYnRAuYJTw2AM_yR, I've downloaded it and found the whole pickle is a python list, which length is 100170, each item is a np array which shape is (1000,5).
My question is do the list ordered by img_id ? I am not sure about it.
Thanks for your help!!!