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Table 6 Declaration of Symbols

From: Photographic measurement of upper-body sitting posture of high school students: A reliability and validity study

C7'x, C7'y X coordinate of C7 marker
T8'x, T8'y X coordinate of T8 marker
M'x, M'y X coordinate of Manubrium marker
θC7 Smallest angle between horizontal and C7 marker stem
θT8 Smallest angle between horizontal and T8 marker stem
θM Smallest angle between horizontal and Manubrium marker stem
LC7 Length of C7 stem
LT8 Length of T8 stem
Lm Length of Manubrium stem