There is another error (by omission) on there. LHR is shown in Zone 6 for both tube and TfL Rail. However it is only Z6 for travel cards and season tickets. For PAYG on TfL Rail the fare is 12 quid each way from Paddington as opposed to 6 by tube. There is a daily cap in operation but that only helps if you are going both ways, I assume TfL don't care on the assumption that they will generally fleece departing visitors but in these social media days it won't take long before people start leaving negative comments. Clearly TfL now prioritise cash over reputation...