This documentation is courtesy of Pedro Salas. Here are the instructions on how to use the app to show the actuator status from an offline observation: Basic usage: /home/groups/ptcs/bin/surfplot-s For example, to show the surface for scan 10 of AGBT21B_024_26: /home/groups/ptcs/bin/surfplot AGBT21B_024_26 -s 10 If you wanted to save it to a figure in your home area: /home/groups/ptcs/bin/surfplot AGBT21B_024_26 -s 10 --save -o ~ The figure would be saved in ~/ AGBT21B_024_26.png If you wanted to save with a different filename: /home/groups/ptcs/bin/surfplot AGBT21B_024_26 -s 10 --save -o ~ -f AGBT21B_024_26_scan_10.png The figure would be saved in ~/ AGBT21B_024_26_scan_10.png