Table 4 Included angle between fissures and tangent lines showing a clear or barely clear five-line sign using the standard algorithm

Right upper

50

− 27.00^† (− 31.15, − 20.75)

− 54.33 ~ − 2.10

48

− 27.50 (− 31.00, − 19.25)

− 40.87 ~ − 2.35

Right middle

50

− 0.50 (− 18.00, 17.00)

− 43.35 ~ 37.80

49

− 3.00 (− 13.00, 11.00)

− 37.50 ~ 31.00

Right lower

50

− 34.50 (− 39.00, − 31.50)

− 45.72 ~ − 23.00

49

− 33.00 (− 36.00, − 28.00)

− 44.00 ~ − 21.00

Left upper

50

− 31.50 (− 37.00, − 28.00)

− 45.72 ~ − 16.28

48

− 33.00 (− 38.50, − 29.00)

− 45.55 ~ − 20.22

Left middle

50

− 32.00 (− 36.00, − 30.00)

− 40.18 ~ − 6.42

49

− 32.00 (− 35.00, − 28.00)

− 41.00 ~ − 17.25

Left lower

50

− 36.00 (− 42.00, − 31.75)

− 46.45 ~ − 22.00

49

− 34.00 (− 37.50, − 31.00)

− 46.00 ~ − 21.25

H

113.97

125.57

p*

< 0.001

< 0.001