What is the equivalent of E4 E3 E2 E1??? (1 Viewer)

[someonehomebush]

What is E4 E3 E2 and E1 equal to in percentage??? For e.g. E4=90%-100% (reported mark) etc..

And which band means you get a reported mark below 50%???

 

[someth1ng]

and which band means you get a reported mark below 50%???

e1

 

[someonehomebush]

e1

So E2 is 50%+?