Help With Function to search a list

[johnissa]

what i have now is a for loop which find every number which is greater than or equal to threshold.

threshold = 15
pattern_width = 4
data_series = [-1, 5, 4, 8, 3, 21, 18, 16, 3, 2, 3, 1, 4, 5, 17, 22, 36, 33, 34, 9, 1, -2]
data_series = data_series + [-2, 4, -1, 7, 13, 12, 3, 1, 4, 5, 26, 22, 28, 27, 26, 2, 8, 6]

greater_than_threshold = [i for i in data_series if i >= threshold]

overlapping = when the distance between indices is < pattern_width

Next i want to go through each value in the greater_than_threshold list and
if chosen value at index < value within an overlapping index, then disregard that value

Could you please help me on how i can do this without using numpy or other complex python built in functions?