The ornamental design for graphical user interface for monitor, as shown and described.
The application file contains at least one drawing executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front perspective view of a graphical user interface for monitor;
FIG. 2 is a front view of the graphical user interface for monitor of FIG. 1; and,
FIG. 3 is an enlarged front view thereof, but shown without broken lines for clarity of illustration.
The monitor shown in broken lines is for the purpose of illustrating the display environment and forms no part of the claimed design.