Maybe it's just me - but I tried three different browsers and usually can't see the short term usage charts on Atlas, i.e. 3-days and 1 week bandwidth charts are usually just blank. Two random examples where I can't see the charts (but there is data; monthly and yearly charts showing up quite well):
https://atlas.torproject.org/#details/F3F8B1A79C6781609B443CF0C1A130C85EB60C...
https://atlas.torproject.org/#details/7D278652898C38878F51D93969EB88C497BFB6...
Sorry, if this is my local issue but I just can't find the reason for it...