I am analyzing the mobile broadband dataset and it is very interesting. There is a big variety of countries and operators.
I am particularly interested in the technologies of the mobile broadband offers and there are some of them (around 55%) that have a blank field.
Any particular reason for this missing information? For instance, in Spain, only Yoigo has a non-blank field for technology. I can tell you that the rest of operators (Movistar, Orange and Vodafone) are using 3G in 2011 and 2012 f you need to fill in the blanks.