18. This separate graph shows the "Best Frequency Chart" where SNR is again graphed for each band. The graph is similar to those of the "Bands" style on the Main Chart except that here values are interpolated to five-minute intervals. Bar colors are the same as those of the Main Chart Bands graphs and change with respect to the Required SNR lines. The Best Frequency Chart updates automatically every five minutes and whenever a circuit parameter is changed. The Best Frequency at the current time is that of the blue flashing bar.