This photometric format was developed under the direction of the Chartered Institution of Building Services Engineers (CIBSE). The most current standard is Technical Memoranda 14 published in 1988.
The ASCII file format is shown below. This is exactly how any TM14 format file should appear when listed directly from a text editor. The standard for this format is available from CIBSE directly.
TM14 File Format
Each line marked with an asterisk must begin a new line. The asterisks should not be included in the data file. Descriptions enclosed by the brackets "<" and ">" refer to the actual data stored on that line.
*< label line 1>
*< label line 2>
*< label line 3>
*< label line 4>
*< label line 51>
*< label line 6>
*< label line 7>
*< label line 8>
*<number of lamps><photometric type><width><length><height>
*<ballast lumen factor><input power><input VA>
*<design attitude>
*<number of vertical angles><number of horizontal angles>
*<vertical angles>
*<horizontal angles>
*<intensity values for all vertical angles at 1st horizontal angle>
*<intensity values for all vertical angles at 2nd horizontal angle>
*<
*<
*<intensity values for all vertical angles at last horizontal angle>
*<glare shape code><luminous area of base><luminous area of side><luminous area of end>