Unable to find NULL values indicated by Data Engineering statistic calculation

[EmmaE1]

Hi all, 

I'm working on a data set with GPS points with their associated distance and other ecological covariates. I've been using the data engineering function to double-check my values make sense and look for any null values. 

Using the 'add to statistics and calculate' function, it shows me my field has NULL values. However, when I go into my actual attribute table I cannot find them. I have tried the select by attribute 'is null' function too, which does not return anything. Clicking 'select null' within the statistics pane itself also does not return any actual NULL values. 

Short from manually scrolling through my 12 000 rows is there anything else I can do to find the null values? 

Thank you. 

[EmmaE1 · Accepted solution]

I managed to find them by using the "Fill in Missing Values" tool - they were actually not NULL values but very very small values. I'm not entirely sure why those small values were in my attribute table.