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Caveats relating to these data files:

• Data is processed only for the time segments indicated (corresponding to the image segments shown in the posters).
• Accuracy of the lidar-radar file collocation is +/- 1 second (corresponds to about +/- 200 m at nominal aircraft speed).
• CPL layer boundaries reported in these files are identical to those reported in the normal CPL layers text file.
• The CRS data is somewhat noisy depending on the threshold used. To eliminate most noise it was required that at least two adjacent data bins have valid radar signature before being classified as a layer. Still, there is some noise present and users should be aware of this.

Sample code to read the text files
View	Filename	Type	Descriptions and Comments
The following is a piece of sample IDL code that can be used to read the layer boundary files. This is sample only and will have to be modified appropriately once you download the files.
	read_CPL_CRS_boundaries.pro	TXT	Be sure to change the read file statements
July 23, 2002
View	Filename	Type	Descriptions and Comments
	crystal_poster_jul23.jpg	JPG	Data images (large poster format)
The following are individual files containing layer boundaries for both CPL and CRS. Each file corresponds to one of the image segments in the poster.
	layer_boundaries_jul23_1.dat	TXT	Start time = 19:41:00 End time = 19:53:01
	layer_boundaries_jul23_2.dat	TXT	Start time = 20:04:15 End time = 20:25:13
	layer_boundaries_jul23_3.dat	TXT	Start time = 20:31:38 End time = 20:53:35
	layer_boundaries_jul23_4.dat	TXT	Start time = 21:00:34 End time = 21:19:40
	layer_boundaries_jul23_5.dat	TXT	Start time = 21:39:01 End time = 21:55:45
	layer_boundaries_jul23_6.dat	TXT	Start time = 22:04:17 End time = 22:24:50
	layer_boundaries_jul23_7.dat	TXT	Start time = 22:31:38 End time = 22:53:11
	layer_boundaries_jul23_8.dat	TXT	Start time = 22:59:48 End time = 23:19:17
July 26, 2002
View	Filename	Type	Descriptions and Comments
	cpl_crs_jul26_image.jpg	JPG	Data images (large poster format)
The following are individual files containing layer boundaries for both CPL and CRS. Each file corresponds to one of the image segments in the poster.
	layer_boundaries_jul26_1.dat	TXT	Start time = 16:37:35 End time = 17:38:53
	layer_boundaries_jul26_2.dat	TXT	Start time = 17:38:54 End time = 18:38:29
	layer_boundaries_jul26_3.dat	TXT	Start time = 18:40:16 End time = 19:39:51
	layer_boundaries_jul26_4.dat	TXT	Start time = 19:39:52 End time = 20:30:50
July 28, 2002
View	Filename	Type	Descriptions and Comments
	crystal_poster_jul28.jpg	JPG	Data images (large poster format)
The following are individual files containing layer boundaries for both CPL and CRS. Each file corresponds to one of the image segments in the poster.
	layer_boundaries_jul28_1.dat	TXT	Start time = 21:08:23 End time = 21:23:45
	layer_boundaries_jul28_2.dat	TXT	Start time = 21:27:00 End time = 21:39:59
	layer_boundaries_jul28_3.dat	TXT	Start time = 21:48:25 End time = 22:03:47
	layer_boundaries_jul28_4.dat	TXT	Start time = 22:06:45 End time = 22:20:54
	layer_boundaries_jul28_5.dat	TXT	Start time = 22:24:05 End time = 22:42:30
	layer_boundaries_jul28_6.dat	TXT	Start time = 22:46:06 End time = 23:00:30
July 29, 2002
View	Filename	Type	Descriptions and Comments
	crystal_poster_jul29.jpg	JPG	Data images (large poster format)
The following are individual files containing layer boundaries for both CPL and CRS. Each file corresponds to one of the image segments in the poster.
	layer_boundaries_jul29_1.dat	TXT	Start time = 18:00:15 End time = 18:18:13
	layer_boundaries_jul29_2.dat	TXT	Start time = 18:23:17 End time = 18:40:21
	layer_boundaries_jul29_3.dat	TXT	Start time = 19:02:42 End time = 19:19:10
	layer_boundaries_jul29_4.dat	TXT	Start time = 19:02:42 End time = 19:19:10
	layer_boundaries_jul29_5.dat	TXT	Start time = 19:21:52 End time = 19:38:03
	layer_boundaries_jul29_6.dat	TXT	Start time = 19:42:36 End time = 19:59:52
	layer_boundaries_jul29_7.dat	TXT	Start time = 20:02:38 End time = 20:20:14
	layer_boundaries_jul29_8.dat	TXT	Start time = 20:23:10 End time = 20:39:24
	layer_boundaries_jul29_9.dat	TXT	Start time = 20:43:36 End time = 21:01:21