The Astrophotography Planner: 2020-2021 Edition

Very disappointed that the data only works for people living between 30 and 50 degrees latitude and its a con that this is not mentioned in the description. If like us you live above 50 degrees, which is pretty much everyone in the UK, the data is meaningless. I tried to extrapolate but values are not linear or predictable so no use to me. Also the 50 degree datum line is printed so finely and faintly it is just about impossible to read. Very disappointed and will be returning this book.