Simplify the following text for a Grade 10 native English-speaking person.
Original: Examples of these lower standards include narrower than usual platforms and undecorated ceilings at Walthamstow Central , Blackhorse Road and Tottenham Hale , adversely affecting lighting levels .
Simplified: Examples of these lower standards include narrower than usual platforms and undecorated ceilings at Walthamstow Central , Blackhorse Road and Tottenham Hale . This also affects lighting levels .