This could just be a bit of coded test data by a web developer that made it online, as I have a similar alternation between 20p and 59p for gas depending on odd/even day since daily reads started to appear. My electricity reads are shown in cost by either using double rate or double actual energy use for some reason. The intermittent glitch with electricity daily chart bars loading appears to have been fixed since the system release on Friday 26th July. At least this revealed that my IHD doesn’t include standing charge in its daily figures.
Having done some calculations myself, it looks as though a potential gas unit is around 11 kWh or 0.35 ft3, which is notably close enough to 1 cubic metre to be the integer flooring going on at the smart gas meter itself.