  The CHE is found to increase in a clear 3-period S-curve pattern, achieving persistence ( Period 3: H~1) from non-persistence ( Period 1: H~0.5).
<coherence>   The CHE is found to increase in a clear 3-period S-curve pattern, achieving persistence ( Period 3: H~1) from non-persistence ( Period 1: H~0.5).
 The CHE is found to increase in a clear 3-period S-curve pattern, achieving persistence ( Period 3: H~1) from non-persistence ( H~0.5).