I have recently come across some papers in my field. They had a large (X,Y) data set, it was binned into 4 bins. Least square method was used to find slope (m) and y intercept (b). In the table that contains the slope and y intercept they include what they call "1 standard deviation error" for each of the m and b. My question is what is this error and was it obtained?
Link to paper Second page table 1 and figure 1