YSI 556 MPS - Manual (Page 128)

Appendix G EcoWatch
YSI 556 MPS YSI Incorporated Page 122
After viewing statistics, click the “x” at the upper right to close the window
and return to the normal display.
Now click on the delimiter icon in the toolbar and then move the
displayed icon to the graph. Click at the two points shown by dotted lines in
the display below, being sure that the first click is to the left of the second.
The data between the two selected points will then be graphed in higher
resolution as shown below.