with frequencies in trains per hour (tph), was: Ticketing At the time of its franchise ending in 2021, Oyster cards were valid from all Zone 1–9 stations served by the company, the travelcard zones having been extended to include stations such as Dartford after an initial outcry by passengers being required to travel to Zone 6 stations such as , or to "tap in" before continuing on their journey. Travelcards (including on Oyster) are however were not valid on High-Speed services, except between and at a special pay-as-you-go fare. Performance In late 2010, the company faced a barrage of criticism for its performance during extreme weather conditions in the south-east of England and there are also allegations that Southeastern deliberately runs reduced services to skew its official performance figures. In 2014, a survey of UK rail passenger satisfaction showed Southeastern to be the lowest-rated train operating company, with just forty per cent of passengers believing that good service is provided and a rating of only one out of five for value for money. Southeastern claimed that the reason for this is that people dislike going to work and that if the survey were to be retaken on a "sunny summer's day" the outcome would be better for the company. In a survey (Best and worst UK train companies) carried out in February 2015 by Which? magazine, Southeastern continued to rank poorly, rated as the second-worst UK train operating train companies customer score of just 44%. This was narrowly ahead of Govia Thameslink Railway, with 43%. Southeastern also achieved only 2/5 or 3/5 star ratings across the six specific categories assessed in the survey (such categories included Punctuality, Reliability and Cleanliness of toilets). Southeastern performed poorly in performance and passenger satisfaction in 2016, with the 2016 survey by Which? magazine finding Southeastern to be the joint-worst performing train operating company in Britain, with a customer score of just 46%. The Spring 2016 National Rail Passenger Survey further underlined Southeastern's continuing poor performance and passenger satisfaction. The company issued a joint response with Network Rail on the day of publication, primarily blaming outside factors and survey methodology. The 2016 Which? figures were backed up by the 2016 Transport Focus survey, which placed Southeastern joint bottom in satisfaction on service delivery. Satisfaction with the frequency of services declined year on year from 73% to 56%, and satisfaction with ticket value scored 30%, the