How can I find the range of empty data in a table

Hi, needing some help. I want to obtain the range in wich there is empty data in a timetable. For expample:

A= [day1,1, day2, 2, day3, NaN, day4, NaN, day5,5]

if you notice the data follows a linear function, and I have already done a fill of the missing information using the function fillmissing(_,'linear'). with this I had obtained another timetable:

B = fillmissing(A,'linear');
B = [day1,1, day2, 2, day3, 3, day4, 4, day5,5]

Now I need to be able to obtain the range that I have filled. the first idea that came to me is comparing the two timetables using the function ismember(A,B) this function return a logical answer where 1 = the information exist in both tables and 0 = the information is not in both tables.

 C = ismember(A,B);
 C = 1,1,0,0,1
where C is logical

I need to obtain something like this:

    Li=3 %inferior limit
    ls=4 %superior limit

The timetable that I'm using has information of every hour of several years. Someone now about a function or have an idea of how can I solve this?

Answer 1

[dpb]

Just use ismissing on the original table.