Curl and Warp Analysis of The LTPP SPS-2 Site in Arizona
APPENDIX B. DATA QUALITY SCREENING
A screening process was performed to select five repeat profile measurements from each visit of each section. The five measurements selected from the group of either five, seven, or nine available runs were those that exhibited the best agreement with each other. In this case, agreement between any two profile measurements was judged by cross correlating them after applying the IRI filter.(10) In this method, the IRI filter is applied to the profiles, then the output signals, rather than the overall index, are compared. High correlation by this method requires that the overall roughness is in agreement, as well as the details of the profile shape that affect IRI. The IRI filter was applied before correlation in this case for the following reasons:
- Direct correlation of unfiltered profiles places a premium on long-wavelength content but ignores much of the contribution of short-wavelength content.
- Correlation of IRI filter output emphasizes profile features in (approximate) proportion to their effect on the overall roughness.
- Correlation of IRI filter output provides a good tradeoff between emphasizing localized rough features at distressed areas in the pavement and placing too much weight on short-duration, narrow features (spikes) that are not likely to agree between measurements. This is because the IRI filter amplifies short-wavelength content but attenuates macrotexture, megatexture, and spikes.
- A relationship has been demonstrated between the cross correlation level of IRI filter output and the expected agreement in overall IRI.(11)
The method was performed with a special provision for correcting modest longitudinal distance measurement errors.
Each comparison between profiles produced a single value that summarized their level of agreement. When 9 repeat profile measurements were available, they produced a total of 36 correlation values. Any subgroup of 5 measurements could be summarized by averaging the appropriate 10 correlation values. The subgroup that produced the highest average was selected, and the other repeats were excluded from the analyses discussed in this report. Table 9 through table 29 list the selected repeats for each visit of each section and the composite correlation level produced by them.
The process used for selecting five repeat measurements from a larger group is similar to the practice within LTPP except that it uses composite agreement in profiles rather than the overall index value. The correlation levels listed in table 9 through table 29 provide a repeatability score and appraise the agreement between profile measurements for each visit of each section. When two profiles produce a correlation level above 0.82, their IRI values are expected to agree within 10 percent most (95 percent) of the time. Above this threshold, the agreement between profiles is usually acceptable for studying the influence of distresses on the profile. When two profiles produce a correlation level above 0.92, they are expected to agree within 5 percent most of the time. Above this threshold, the agreement between profiles is good. Correlation above 0.92 often depends on consistent lateral tracking of the profiler and may be very difficult to achieve on highly distressed surfaces. The IRI values in this report are the average of five observations, which tightens the tolerance even further.
Table 9. Selected Repeats for Section 0213. |
Visit |
Repeat Number |
Composite Correlation |
01 |
2 |
3 |
6 |
7 |
8 |
0.935 |
02 |
2 |
5 |
6 |
7 |
9 |
0.902 |
03 |
1 |
3 |
5 |
6 |
8 |
0.971 |
04 |
1 |
3 |
4 |
5 |
7 |
0.953 |
05 |
1 |
2 |
5 |
6 |
7 |
0.965 |
06 |
1 |
3 |
4 |
5 |
6 |
0.963 |
07 |
4 |
5 |
6 |
7 |
9 |
0.948 |
08 |
1 |
2 |
4 |
7 |
9 |
0.936 |
09 |
1 |
3 |
4 |
5 |
7 |
0.948 |
10 |
1 |
2 |
6 |
7 |
8 |
0.947 |
11 |
2 |
3 |
4 |
7 |
9 |
0.900 |
12 |
1 |
4 |
5 |
7 |
8 |
0.853 |
13 |
1 |
2 |
3 |
4 |
5 |
0.812 |
14 |
1 |
3 |
4 |
5 |
6 |
0.771 |
15 |
1 |
4 |
5 |
7 |
9 |
0.769 |
Table 10. Selected Repeats for Section 0214. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
2 |
3 |
5 |
6 |
8 |
0.909 |
02 |
2 |
4 |
6 |
7 |
8 |
0.822 |
03 |
2 |
3 |
4 |
5 |
8 |
0.912 |
04 |
1 |
3 |
4 |
5 |
7 |
0.900 |
05 |
1 |
3 |
4 |
5 |
6 |
0.903 |
06 |
2 |
3 |
4 |
6 |
7 |
0.926 |
07 |
1 |
2 |
5 |
6 |
8 |
0.953 |
08 |
1 |
2 |
5 |
6 |
7 |
0.950 |
09 |
1 |
3 |
5 |
6 |
8 |
0.937 |
10 |
2 |
3 |
5 |
6 |
8 |
0.935 |
11 |
3 |
5 |
6 |
7 |
8 |
0.924 |
12 |
2 |
3 |
4 |
7 |
8 |
0.945 |
13 |
4 |
5 |
6 |
8 |
9 |
0.959 |
14 |
1 |
3 |
4 |
7 |
8 |
0.927 |
15 |
2 |
4 |
5 |
6 |
9 |
0.955 |
Table 11. Selected Repeats for Section 0215. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
3 |
4 |
5 |
8 |
0.930 |
02 |
1 |
3 |
5 |
7 |
8 |
0.920 |
03 |
5 |
6 |
7 |
8 |
9 |
0.962 |
04 |
1 |
3 |
4 |
5 |
7 |
0.922 |
05 |
1 |
2 |
4 |
6 |
7 |
0.967 |
06 |
1 |
2 |
4 |
6 |
7 |
0.955 |
07 |
1 |
3 |
4 |
8 |
9 |
0.976 |
08 |
4 |
5 |
6 |
7 |
9 |
0.987 |
09 |
3 |
5 |
6 |
7 |
8 |
0.943 |
10 |
1 |
3 |
5 |
8 |
9 |
0.933 |
11 |
1 |
2 |
3 |
5 |
7 |
0.948 |
12 |
2 |
4 |
5 |
6 |
7 |
0.981 |
13 |
2 |
3 |
4 |
7 |
9 |
0.976 |
14 |
1 |
2 |
7 |
8 |
9 |
0.969 |
15 |
2 |
3 |
4 |
5 |
8 |
0.965 |
S01 |
2 |
3 |
4 |
5 |
7 |
0.936 |
S02 |
1 |
2 |
3 |
4 |
5 |
0.966 |
S03 |
1 |
2 |
3 |
4 |
5 |
0.955 |
S04 |
1 |
2 |
3 |
4 |
5 |
0.921 |
S05 |
1 |
2 |
3 |
4 |
5 |
0.937 |
S06 |
1 |
2 |
3 |
4 |
5 |
0.959 |
S07 |
1 |
2 |
3 |
4 |
5 |
0.936 |
S08 |
2 |
3 |
4 |
5 |
6 |
0.959 |
S09 |
1 |
2 |
3 |
4 |
7 |
0.977 |
S10 |
1 |
3 |
4 |
5 |
9 |
0.972 |
S11 |
2 |
3 |
5 |
6 |
7 |
0.979 |
S12 |
1 |
2 |
3 |
6 |
8 |
0.983 |
S13 |
1 |
3 |
4 |
5 |
7 |
0.979 |
S14 |
2 |
3 |
5 |
6 |
7 |
0.965 |
S15 |
4 |
5 |
6 |
7 |
9 |
0.960 |
S16 |
1 |
2 |
3 |
4 |
5 |
0.965 |
S17 |
1 |
2 |
3 |
4 |
6 |
0.976 |
S18 |
1 |
4 |
7 |
8 |
9 |
0.947 |
S19 |
2 |
3 |
5 |
6 |
9 |
0.963 |
S20 |
2 |
4 |
6 |
7 |
9 |
0.960 |
S21 |
1 |
3 |
4 |
5 |
6 |
0.972 |
S22 |
3 |
4 |
6 |
7 |
9 |
0.975 |
S23 |
3 |
4 |
5 |
8 |
9 |
0.964 |
S24 |
1 |
4 |
5 |
6 |
9 |
0.957 |
S25 |
1 |
2 |
4 |
7 |
9 |
0.975 |
S26 |
1 |
2 |
4 |
5 |
6 |
0.973 |
S27 |
1 |
2 |
3 |
8 |
9 |
0.972 |
S28 |
4 |
6 |
7 |
8 |
9 |
0.961 |
S29 |
1 |
2 |
3 |
4 |
8 |
0.973 |
S30 |
2 |
4 |
6 |
7 |
8 |
0.978 |
S31 |
3 |
4 |
6 |
7 |
8 |
0.978 |
S32 |
1 |
2 |
3 |
4 |
6 |
0.976 |
Table 12. Selected Repeats for Section 0216. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
3 |
5 |
6 |
8 |
9 |
0.922 |
02 |
3 |
5 |
7 |
8 |
9 |
0.892 |
03 |
1 |
2 |
3 |
5 |
7 |
0.927 |
04 |
1 |
2 |
4 |
5 |
6 |
0.930 |
05 |
1 |
2 |
3 |
5 |
6 |
0.951 |
06 |
2 |
3 |
4 |
5 |
6 |
0.948 |
07 |
2 |
3 |
4 |
6 |
9 |
0.968 |
08 |
2 |
3 |
4 |
6 |
8 |
0.957 |
09 |
1 |
2 |
4 |
5 |
8 |
0.930 |
10 |
1 |
3 |
4 |
6 |
7 |
0.937 |
11 |
2 |
4 |
5 |
6 |
9 |
0.910 |
12 |
1 |
4 |
6 |
7 |
8 |
0.949 |
13 |
2 |
4 |
7 |
8 |
9 |
0.954 |
14 |
2 |
3 |
6 |
8 |
9 |
0.938 |
15 |
1 |
2 |
3 |
4 |
8 |
0.948 |
Table 13. Selected Repeats for Section 0217. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
4 |
6 |
7 |
8 |
9 |
0.925 |
02 |
1 |
4 |
5 |
6 |
8 |
0.876 |
03 |
3 |
4 |
6 |
8 |
9 |
0.951 |
04 |
2 |
3 |
4 |
6 |
7 |
0.916 |
05 |
1 |
2 |
3 |
6 |
7 |
0.915 |
06 |
1 |
2 |
4 |
5 |
7 |
0.939 |
07 |
4 |
5 |
6 |
8 |
9 |
0.963 |
08 |
1 |
2 |
3 |
6 |
9 |
0.957 |
09 |
1 |
2 |
3 |
4 |
5 |
0.921 |
10 |
1 |
2 |
3 |
7 |
9 |
0.907 |
11 |
1 |
2 |
6 |
7 |
9 |
0.875 |
12 |
1 |
3 |
5 |
6 |
7 |
0.957 |
13 |
2 |
3 |
4 |
6 |
9 |
0.911 |
14 |
1 |
2 |
5 |
7 |
9 |
0.933 |
15 |
1 |
5 |
6 |
7 |
9 |
0.838 |
Table 14. Selected Repeats for Section 0218. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
2 |
5 |
7 |
9 |
0.898 |
02 |
2 |
4 |
5 |
8 |
9 |
0.818 |
03 |
1 |
3 |
6 |
7 |
9 |
0.909 |
04 |
1 |
3 |
4 |
5 |
7 |
0.891 |
05 |
1 |
2 |
3 |
4 |
5 |
0.888 |
06 |
2 |
3 |
4 |
6 |
7 |
0.923 |
07 |
1 |
2 |
3 |
6 |
9 |
0.944 |
08 |
1 |
3 |
4 |
7 |
8 |
0.951 |
09 |
2 |
3 |
5 |
6 |
7 |
0.892 |
10 |
1 |
2 |
4 |
7 |
9 |
0.906 |
11 |
1 |
2 |
3 |
6 |
7 |
0.889 |
12 |
4 |
5 |
6 |
7 |
9 |
0.928 |
13 |
2 |
3 |
6 |
8 |
9 |
0.931 |
14 |
1 |
3 |
7 |
8 |
9 |
0.947 |
15 |
1 |
3 |
6 |
7 |
8 |
0.921 |
Table 15. Selected Repeats for Section 0219. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
3 |
5 |
6 |
7 |
9 |
0.902 |
02 |
1 |
2 |
5 |
6 |
8 |
0.870 |
03 |
2 |
4 |
7 |
8 |
9 |
0.931 |
04 |
1 |
3 |
4 |
6 |
7 |
0.920 |
05 |
1 |
2 |
3 |
5 |
7 |
0.928 |
06 |
2 |
3 |
4 |
6 |
7 |
0.942 |
07 |
2 |
4 |
6 |
8 |
9 |
0.955 |
08 |
1 |
2 |
5 |
6 |
8 |
0.954 |
09 |
1 |
2 |
3 |
7 |
9 |
0.923 |
10 |
1 |
2 |
5 |
6 |
8 |
0.932 |
11 |
4 |
5 |
6 |
7 |
8 |
0.936 |
12 |
1 |
4 |
6 |
7 |
8 |
0.970 |
13 |
2 |
3 |
4 |
8 |
9 |
0.954 |
14 |
1 |
3 |
4 |
5 |
6 |
0.951 |
15 |
4 |
5 |
6 |
7 |
9 |
0.931 |
Table 16. Selected Repeats for Section 0220. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
5 |
6 |
7 |
8 |
9 |
0.910 |
02 |
3 |
4 |
5 |
6 |
9 |
0.871 |
03 |
1 |
2 |
6 |
7 |
8 |
0.917 |
04 |
1 |
3 |
4 |
6 |
7 |
0.898 |
05 |
2 |
3 |
4 |
6 |
7 |
0.950 |
06 |
1 |
2 |
5 |
6 |
7 |
0.950 |
07 |
1 |
2 |
5 |
7 |
9 |
0.935 |
08 |
2 |
3 |
4 |
5 |
6 |
0.958 |
09 |
1 |
2 |
3 |
6 |
8 |
0.915 |
10 |
2 |
3 |
4 |
6 |
7 |
0.929 |
11 |
1 |
2 |
5 |
6 |
9 |
0.938 |
12 |
3 |
4 |
6 |
7 |
8 |
0.936 |
13 |
2 |
3 |
6 |
7 |
9 |
0.932 |
14 |
2 |
4 |
5 |
6 |
7 |
0.944 |
15 |
1 |
3 |
6 |
8 |
9 |
0.936 |
Table 17. Selected Repeats for Section 0221. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
4 |
6 |
8 |
9 |
0.890 |
02 |
4 |
6 |
7 |
8 |
9 |
0.838 |
03 |
1 |
2 |
4 |
6 |
9 |
0.901 |
04 |
1 |
2 |
4 |
5 |
6 |
0.882 |
05 |
1 |
2 |
3 |
5 |
6 |
0.936 |
06 |
1 |
2 |
4 |
5 |
7 |
0.946 |
07 |
1 |
2 |
5 |
6 |
9 |
0.932 |
08 |
1 |
5 |
6 |
8 |
9 |
0.946 |
09 |
1 |
5 |
6 |
7 |
8 |
0.825 |
10 |
1 |
3 |
4 |
6 |
8 |
0.861 |
11 |
2 |
4 |
5 |
6 |
7 |
0.857 |
12 |
3 |
4 |
5 |
6 |
7 |
0.943 |
13 |
1 |
2 |
3 |
5 |
6 |
0.907 |
14 |
1 |
2 |
3 |
4 |
6 |
0.949 |
15 |
2 |
5 |
7 |
8 |
9 |
0.934 |
Table 18. Selected Repeats for Section 0222. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
4 |
5 |
6 |
8 |
9 |
0.898 |
02 |
1 |
4 |
5 |
6 |
7 |
0.816 |
03 |
1 |
3 |
5 |
6 |
9 |
0.942 |
04 |
1 |
3 |
5 |
6 |
7 |
0.857 |
05 |
2 |
3 |
4 |
6 |
7 |
0.929 |
06 |
2 |
3 |
4 |
5 |
7 |
0.920 |
07 |
2 |
4 |
5 |
6 |
8 |
0.943 |
08 |
2 |
4 |
5 |
7 |
8 |
0.948 |
09 |
1 |
2 |
4 |
6 |
7 |
0.900 |
10 |
1 |
2 |
3 |
5 |
6 |
0.880 |
11 |
2 |
3 |
4 |
6 |
8 |
0.853 |
12 |
2 |
3 |
6 |
7 |
8 |
0.935 |
13 |
2 |
3 |
5 |
6 |
9 |
0.931 |
14 |
2 |
3 |
4 |
6 |
7 |
0.914 |
15 |
2 |
6 |
7 |
8 |
9 |
0.910 |
Table 19. Selected Repeat for Section 0223. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
2 |
6 |
7 |
9 |
0.892 |
02 |
1 |
3 |
4 |
8 |
9 |
0.893 |
03 |
4 |
5 |
6 |
7 |
9 |
0.934 |
04 |
3 |
4 |
5 |
6 |
7 |
0.948 |
05 |
1 |
2 |
3 |
6 |
7 |
0.943 |
06 |
1 |
2 |
3 |
4 |
6 |
0.953 |
07 |
1 |
2 |
3 |
6 |
8 |
0.956 |
08 |
3 |
4 |
5 |
6 |
9 |
0.960 |
09 |
3 |
6 |
7 |
8 |
9 |
0.949 |
10 |
1 |
2 |
3 |
5 |
8 |
0.914 |
11 |
5 |
6 |
7 |
8 |
9 |
0.946 |
12 |
2 |
4 |
5 |
6 |
9 |
0.972 |
13 |
2 |
3 |
4 |
8 |
9 |
0.956 |
14 |
3 |
5 |
6 |
8 |
9 |
0.965 |
15 |
3 |
4 |
6 |
8 |
9 |
0.951 |
Table 20. Selected Repeats for Section 0224. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
3 |
4 |
6 |
8 |
9 |
0.894 |
02 |
4 |
5 |
6 |
8 |
9 |
0.837 |
03 |
2 |
3 |
4 |
6 |
7 |
0.907 |
04 |
1 |
2 |
3 |
4 |
5 |
0.863 |
05 |
1 |
2 |
3 |
6 |
7 |
0.873 |
06 |
2 |
3 |
5 |
6 |
7 |
0.921 |
07 |
2 |
3 |
5 |
6 |
7 |
0.940 |
08 |
2 |
4 |
6 |
7 |
8 |
0.932 |
09 |
1 |
2 |
4 |
5 |
8 |
0.917 |
10 |
2 |
4 |
6 |
8 |
9 |
0.960 |
11 |
1 |
2 |
4 |
7 |
9 |
0.873 |
12 |
1 |
2 |
6 |
7 |
8 |
0.939 |
13 |
5 |
6 |
7 |
8 |
9 |
0.950 |
14 |
3 |
6 |
7 |
8 |
9 |
0.905 |
15 |
1 |
2 |
3 |
5 |
9 |
0.918 |
Table 21. Selected Repeats for Section 0260. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
2 |
3 |
4 |
7 |
0.939 |
02 |
3 |
5 |
6 |
8 |
9 |
0.899 |
03 |
1 |
2 |
5 |
6 |
8 |
0.932 |
04 |
3 |
4 |
5 |
6 |
7 |
0.885 |
05 |
1 |
2 |
4 |
5 |
7 |
0.921 |
06 |
2 |
4 |
5 |
6 |
7 |
0.920 |
07 |
1 |
3 |
4 |
6 |
9 |
0.952 |
08 |
2 |
3 |
6 |
7 |
9 |
0.962 |
09 |
1 |
3 |
4 |
6 |
8 |
0.921 |
10 |
1 |
2 |
5 |
7 |
8 |
0.897 |
11 |
1 |
2 |
5 |
6 |
7 |
0.837 |
12 |
1 |
3 |
4 |
6 |
8 |
0.889 |
13 |
1 |
3 |
5 |
6 |
8 |
0.799 |
14 |
1 |
2 |
3 |
4 |
6 |
0.882 |
15 |
1 |
3 |
4 |
5 |
6 |
0.866 |
Table 22. Selected Repeats for Section 0261. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
3 |
5 |
6 |
8 |
9 |
0.916 |
02 |
2 |
4 |
6 |
7 |
9 |
0.872 |
03 |
5 |
6 |
7 |
8 |
9 |
0.910 |
04 |
1 |
3 |
5 |
6 |
7 |
0.857 |
05 |
3 |
4 |
5 |
6 |
7 |
0.926 |
06 |
1 |
2 |
4 |
5 |
7 |
0.896 |
07 |
3 |
4 |
5 |
6 |
7 |
0.937 |
08 |
1 |
3 |
4 |
5 |
7 |
0.940 |
09 |
1 |
2 |
3 |
4 |
9 |
0.866 |
10 |
1 |
2 |
5 |
6 |
7 |
0.860 |
11 |
1 |
4 |
5 |
6 |
7 |
0.766 |
12 |
4 |
5 |
6 |
8 |
9 |
0.882 |
13 |
2 |
3 |
4 |
7 |
8 |
0.893 |
14 |
1 |
2 |
3 |
6 |
7 |
0.877 |
15 |
1 |
2 |
3 |
5 |
9 |
0.922 |
Table 23. Selected Repeats for Section 0262. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
4 |
5 |
6 |
8 |
9 |
0.867 |
02 |
1 |
4 |
5 |
7 |
9 |
0.859 |
03 |
2 |
3 |
5 |
6 |
7 |
0.965 |
04 |
2 |
3 |
4 |
5 |
7 |
0.969 |
05 |
1 |
2 |
3 |
4 |
5 |
0.981 |
06 |
2 |
3 |
4 |
5 |
6 |
0.980 |
07 |
2 |
5 |
6 |
8 |
9 |
0.981 |
08 |
2 |
3 |
5 |
6 |
7 |
0.986 |
09 |
1 |
2 |
3 |
4 |
6 |
0.976 |
10 |
2 |
3 |
4 |
6 |
7 |
0.975 |
11 |
2 |
3 |
4 |
6 |
7 |
0.978 |
12 |
1 |
4 |
5 |
8 |
9 |
0.982 |
13 |
2 |
3 |
5 |
7 |
9 |
0.949 |
14 |
1 |
4 |
7 |
8 |
9 |
0.959 |
15 |
1 |
2 |
5 |
8 |
9 |
0.974 |
Table 24. Selected Repeats for Section 0263. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
3 |
6 |
7 |
8 |
9 |
0.839 |
02 |
1 |
6 |
7 |
8 |
9 |
0.813 |
03 |
1 |
2 |
3 |
5 |
9 |
0.940 |
04 |
1 |
2 |
3 |
4 |
5 |
0.936 |
05 |
2 |
3 |
4 |
5 |
7 |
0.939 |
06 |
1 |
2 |
3 |
4 |
6 |
0.942 |
07 |
1 |
3 |
5 |
7 |
9 |
0.947 |
08 |
2 |
3 |
5 |
7 |
9 |
0.944 |
09 |
2 |
5 |
6 |
7 |
8 |
0.884 |
10 |
1 |
2 |
4 |
5 |
9 |
0.932 |
11 |
1 |
2 |
4 |
5 |
7 |
0.855 |
12 |
2 |
3 |
4 |
6 |
7 |
0.949 |
13 |
2 |
4 |
5 |
6 |
8 |
0.941 |
14 |
2 |
3 |
5 |
7 |
8 |
0.939 |
15 |
2 |
3 |
4 |
5 |
6 |
0.899 |
Table 25. Selected Repeats for Section 0264. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
2 |
3 |
4 |
5 |
8 |
0.906 |
02 |
1 |
5 |
6 |
7 |
8 |
0.931 |
03 |
1 |
2 |
4 |
6 |
8 |
0.938 |
04 |
2 |
3 |
4 |
5 |
6 |
0.940 |
05 |
2 |
3 |
5 |
6 |
7 |
0.964 |
06 |
1 |
2 |
3 |
6 |
7 |
0.951 |
07 |
1 |
2 |
5 |
6 |
8 |
0.962 |
08 |
1 |
4 |
5 |
6 |
7 |
0.969 |
09 |
1 |
3 |
4 |
7 |
8 |
0.904 |
10 |
3 |
4 |
5 |
7 |
8 |
0.894 |
11 |
1 |
2 |
4 |
5 |
6 |
0.911 |
12 |
1 |
3 |
6 |
8 |
9 |
0.968 |
13 |
2 |
4 |
6 |
8 |
9 |
0.946 |
14 |
1 |
2 |
4 |
6 |
7 |
0.962 |
15 |
1 |
2 |
3 |
4 |
5 |
0.937 |
Table 26. Selected Repeats for Section 0265. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
2 |
4 |
5 |
8 |
0.915 |
02 |
4 |
5 |
6 |
7 |
9 |
0.879 |
03 |
1 |
3 |
4 |
6 |
7 |
0.958 |
04 |
3 |
4 |
5 |
6 |
7 |
0.927 |
05 |
1 |
4 |
5 |
6 |
7 |
0.950 |
06 |
1 |
2 |
4 |
6 |
7 |
0.937 |
07 |
2 |
4 |
6 |
7 |
8 |
0.976 |
08 |
2 |
3 |
4 |
5 |
6 |
0.965 |
09 |
2 |
3 |
4 |
5 |
7 |
0.923 |
10 |
3 |
6 |
7 |
8 |
9 |
0.935 |
11 |
2 |
4 |
5 |
6 |
7 |
0.916 |
12 |
2 |
3 |
7 |
8 |
9 |
0.974 |
13 |
3 |
4 |
6 |
8 |
9 |
0.966 |
14 |
1 |
2 |
4 |
6 |
7 |
0.962 |
15 |
1 |
2 |
3 |
6 |
7 |
0.977 |
Table 27. Selected Repeats for Section 0266. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
4 |
6 |
7 |
9 |
0.886 |
02 |
1 |
2 |
3 |
5 |
6 |
0.885 |
03 |
1 |
2 |
7 |
8 |
9 |
0.941 |
04 |
1 |
2 |
3 |
4 |
6 |
0.901 |
05 |
1 |
2 |
3 |
4 |
6 |
0.972 |
06 |
1 |
2 |
3 |
5 |
6 |
0.943 |
07 |
1 |
4 |
6 |
7 |
8 |
0.958 |
08 |
2 |
3 |
4 |
5 |
6 |
0.963 |
09 |
3 |
4 |
7 |
8 |
9 |
0.902 |
10 |
1 |
3 |
5 |
7 |
8 |
0.949 |
11 |
1 |
4 |
5 |
7 |
9 |
0.934 |
12 |
1 |
2 |
5 |
6 |
9 |
0.947 |
13 |
1 |
2 |
4 |
5 |
8 |
0.960 |
14 |
1 |
3 |
4 |
5 |
8 |
0.950 |
15 |
1 |
3 |
4 |
5 |
6 |
0.937 |
Table 28. Selected Repeats for Section 0267. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
3 |
6 |
7 |
9 |
0.888 |
02 |
4 |
5 |
6 |
7 |
8 |
0.878 |
03 |
4 |
5 |
6 |
8 |
9 |
0.919 |
04 |
1 |
2 |
3 |
4 |
6 |
0.872 |
05 |
1 |
2 |
4 |
5 |
6 |
0.921 |
06 |
2 |
3 |
4 |
5 |
7 |
0.949 |
07 |
1 |
2 |
3 |
7 |
9 |
0.955 |
08 |
1 |
4 |
6 |
7 |
9 |
0.960 |
09 |
2 |
3 |
5 |
6 |
8 |
0.874 |
10 |
2 |
3 |
5 |
7 |
9 |
0.930 |
11 |
1 |
2 |
5 |
6 |
7 |
0.926 |
12 |
1 |
2 |
4 |
6 |
9 |
0.869 |
13 |
1 |
4 |
6 |
7 |
8 |
0.878 |
14 |
1 |
2 |
4 |
5 |
6 |
0.907 |
15 |
1 |
2 |
3 |
4 |
6 |
0.909 |
Table 29 . Selected Repeats for Section 0268. |
Visit |
Repeat Numbers |
Composite Correlation |
01 |
1 |
2 |
5 |
6 |
9 |
0.851 |
02 |
1 |
3 |
5 |
6 |
8 |
0.813 |
03 |
4 |
5 |
7 |
8 |
9 |
0.919 |
04 |
1 |
2 |
4 |
6 |
7 |
0.863 |
05 |
1 |
2 |
4 |
5 |
6 |
0.904 |
06 |
2 |
3 |
5 |
6 |
7 |
0.956 |
07 |
1 |
3 |
4 |
8 |
9 |
0.932 |
08 |
2 |
3 |
6 |
7 |
9 |
0.947 |
09 |
1 |
2 |
3 |
5 |
6 |
0.831 |
10 |
1 |
5 |
6 |
8 |
9 |
0.924 |
11 |
3 |
4 |
6 |
7 |
9 |
0.875 |
12 |
2 |
3 |
6 |
7 |
8 |
0.939 |
13 |
3 |
4 |
5 |
7 |
9 |
0.931 |
14 |
1 |
2 |
5 |
6 |
9 |
0.883 |
15 |
2 |
3 |
4 |
6 |
9 |
0.873 |
Only 9 of the 347 sets of selected repeat measurements listed in table 9 through table 29 exhibited a composite correlation below 0.82. Measurements of sections 0215 and 0262 produced the highest repeatability scores, whereas some profiles from visit 02 and from later visits of section 0213 produced the lowest scores. Fortunately, correlation was never low enough to impede the automated synchronization process. However, low repeatability scores prompted inspection of profile plots to help identify the cause. In visit 02, most of the profiles included short-wavelength content that was not correlated between repeat measurements. The effect was greatest in sections 0214, 0218, 0222, 0263, and 0268. It is suspected that the effect was caused by coarse surface texture, but that cannot be verified.
Other observations were as follows:
- Section 0213, visits 13–15: The right profiles of these visits included deep, narrow dips or patches of narrow dips that appeared in some areas in each profile with inconsistent size and placement.
- Section 0260, later visits: Agreement between profiles was diminished by patches of uncorrelated deep, narrow dips in the left profiles from 50 to 65 ft from the start of the section and from 330 to 360 ft from the start of the section. This is an AC section.
- Section 0261, visit 11: Localized roughness appeared on the right side from 474 to 479 ft from the start of the section in four of the five profiles and with inconsistent shape and placement on the left side from 355 to 375 ft from the start of the section. Visits 09 and 10 also included inconsistent measurement of these features. This is an AC section.
- Sections 0267 and 0268, visit 09: The short-wavelength content from the visit did not agree well, and the profiles included some extraneous narrow dips.