pl32
First thing, the rule is not 50% of the time but rather the majority of days, be careful in how you use this as 51% (or even 57%) of a week does not meet the criteria.
As to the Descriptors. Descriptors (d) and (f) are considered to be mutually exclusive from (e), you cannot score for one without fundamentally undermining any reasons you have for scoring for for the other.
So, you need to consider which you meet on the majority of days; (d) or (e) and then provide testimony and evidence to support your argument.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems