MySQL: Get start & end timestamp for each day

Question

Similar to the question at MYSQL: Find Start and End Timestamp of a consecutive count, I have a table with similar data:

StatusTime          | Reading   
2014-01-01 0         


        

Answer 1

Something like this?

SELECT DISTINCT MAX(StatusTime), MIN(StatusTime) 
FROM table_name
WHERE Reading < 50 OR Reading > 50;