[Bug-wget] wget output, dot vs bar differences

[julius]

hi,

im looking for a method to graph download speed over time with wget as download 
tool.

looking closely at wgets output im a bit confused.

in this output:

10650K .......... .......... .......... .......... .......... 97% 11.3M 0s
10700K .......... .......... .......... .......... .......... 98% 10.5M 0s
10750K .......... .......... .......... .......... .......... 98% 16.3M 0s
10800K .......... .......... .......... .......... .......... 99% 15.6M 0s
10850K .......... .......... .......... .......... .......... 99% 18.3M 0s
10900K .......... .......... .......... .......... .......... 99% 24.9M 0s
10950K                                                       100%  399G=3.7s

at the end, the 11.3M for example probably shows the current speed.

since the download goes up 50K very steady, how do you calculate the number at 
the end?
and why is there no time dimension?

capturint the output of --progress=bar:force shows:

2% [>                                      ] 19,818,776  4.38M/s  eta 3m 39s

i can see that in the later one the file size goes up with changing values,
values around 50K while in the first its exactly 50K. why the difference?

why not add the whole size that has been downloaded, which is some MB/s ?