The usage stats only show the night time usage if it is affecting the total, i.e. is 0.01 units or more.
When it shows a foot note is added to explain it.
Again, this is to avoid confusion. Having not mentioned it in the main tariffs people would be confused by it appearing on the usage page even as 0.00 units.
It is still 2am to 6am night usage, and as previously advised uses units at 1TB/unit.
Do not think we are out to get you - you should know better than that by now

If we consider any changes to the actual tariff we'll post details, honest.
We are considering possible changes, but nothing definite and no definite time frame, so interested in any comments.
Possible ideas at present are making it an opt-in tariff where you pick a 4 hour slot. This could avoid the huge spike at 2am by spreading it out. A bit like the old "economy 7" electricity tariff.
I have also considered making it a slot that is (as used to be) un-metered, but a paid-for extra to have it, like the old "midnight line" (for those that remember such things). However, this would probably be with a caveat of the existing users getting it free.
These are just ideas at present. For now nothing has changed.