Notes

1. For channel specificities of the type N1$\sim$N2:c0;c1;c2;c3MHz the list of channel selection is applied to all SPWs in the range [N0, N1]. c3 is converted from physical units to channel index by using the channel width from SPW N1. Is it better to use the min. chan. among the selected SPWs?

2. If channel range is out of bounds, it will be brought within bounds per SPW. If the lower limit of a range is greater than the available outer limit, exception is generated. If the lower limit is less than zero, it is set to zero. If upper limit is greater than the available outer limit, it is set to the available outer limit.

   If a single channel specification is greater than the available outer limit, an exception is thrown. If it is less than zero, it is set to zero.

3. For ranges of physical values, it is assumed that the spectral window sub-table's CHAN_FREQ column has ordered list of channel frequencies.