Figure 5

Curves and polar coordinates of circadian variations in BP, 360° = 24 hours, 00:00 = 0°.
(a) Curve of circadian BP changes for baseline systolic, post-treatment systolic, baseline diastolic and post-treatment diastolic, respectively; (b) Polar coordinate of circadian BP changes in baseline systolic, post-treatment systolic, baseline diastolic and post-treatment diastolic, respectively.