What ADSL status values means?

[seco]

Hi,

I took a screenshot from my Router ADSL status page:



Why my speed is too slow about 4 Mbbs?
Is ISP slowing me? or I have a problem with my line?
I don't understand these values and what it means.

Thanks in advance.

 

[RyanPCMR]

Did you even search the forum before posting this? Read this thread: Understanding SNR and Attenuation Rates