CIII-DT-6 application for channel 14
 

It may not yet appear in the IC database, but Shaw Media has applied to the CRTC to switch the Ottawa transmitter from channel 6 to channel 14.

You can view the complete Engineering Brief in the CRTC zip file at https://services.crtc.gc.ca/pub/DocW...ppNo=201204651. (The file you want is "DM#1707219 - 2012-0465-1 - APP - Doc 2 - Appendix 2 - Engineering Brief.pdf" )
It should provide the EHAAT, power, and Antenna pattern info you need to feed to your L-R analysis.

It would be great if you could manage to get this done some time before the end of the comment period, which ends May 23.

CBOFT-DT's application to move from channel 9 at the top of the tower to channel 33 just slightly below has already been approved by the CRTC. However, if you cannot find the info in the IC database, the CRTC app does not include sufficient information for you. (Only the maps are provided, but not the complete Engineering Brief.)

Here's the CIII-DT info from the Engineering Brief:
SUMMARY SHEET
APPLICANT: Shaw Television Limited Partnership
121 Bloor St. E., Suite 1500
Toronto, ON M4W 3M5
STATION LOCATION: Ottawa, ON
STATION: CIII-DT-6
ANTENNA CO-ORDINATES (NAD83): Latitude 45° 30' 11" N
Longitude 75° 51' 01" W
TRANSMITTER POWER: 6.5 kW operating at 5.77 kW
SYSTEM EFFICIENCY: 54.3%
ANTENNA POLARIZATION: elliptical (70 H/ 30 V)
ANTENNA POWER GAIN:
At 1.5° Below Horizontal: 46.3 (H) / 20.7 (V) times, maximum
15.7 (H) / 6.77 (V) times, average
EFFECTIVE RADIATED POWER:
At 1.5° Below Horizontal: 145 kW (H) / 64.9 kW (V) maximum
49.2 kW (H) / 21.2 kW (V) average
EHAAT: 390.5 m
Overall Height of Structure
Above Ground Level: 219.2 m
Radiating Centre Above Mean Sea Level: 529.1 m
Ground Level Above Mean Sea Level: 350.5 m
CHANNEL NUMBER: 14R
FREQUENCY: 470 MHz to 476 MHz
TRANSPORT STREAM IDENTIFIER (TSID): 432B

The horizontal and vertical antenna pattern data are tabulated in Appendices B and C.