Sainsbury's Super

I've started filling up with Sainsburys Super Unleaded, with the the first set of figures being the last of the Morrisons fuel being used up and then this next batch the Sainsburys lot. Though I have had the bike standing and and reving at the weeked, so the figures are going to be a little out at first.
(Mpg 49.69) KM per Litre:17.59 Pence per mile:8.41 128 miles for £10.76
(Mpg 50.01) KM per Litre:17.7 Pence per mile:8.35 148.5 miles for £12.41
light on at 141.