Selection of Structuring Element for Dilation of signal.

I am trying to dilate the active power signal. But i am unable to get desired results due to improper selection of structuring element as shown in figure. I tried following structuring elements. [1 1 1 1 1] (linear flat)

[-1.5, -1, -0.5, 0, 0.5, 1, 1.5] (beeline)

[0, 0.0397, 0.052, 0.058, 0.06, 0.058, 0.052, 0.0397, 0] (semicircular SE with the length 9 and radius 0.06)

[0, 0.0387, 0.0529, 0.0624, 0.0693, 0.0742, 0.0775, 0.0794, 0.08, 0.0794, 0.0775, 0.0742, 0.0693, 0.0624, 0.0529, 0.0387, 0] (semicircular with length 17 and radius 0.08)

[0, 0.0332, 0.0447, 0.052, 0.0566, 0.0592, 0.06, 0.0592, 0.0566, 0.052, 0.0447, 0.0332, 0] (semicircular with length 13 and radius 0.06)

[0, 0.0214, 0.0429, 0.0643, 0.0857, 0.1071, 0.1286, 0.15, 0.1286, 0.1071, 0.0857, 0.0643, 0.0429, 0.0214, 0] (trigonal SE with the length 15)

[0, 0.0167, 0.0333, 0.05, 0.0667, 0.0833, 0.1, 0.0833, 0.0667, 0.05, 0.0333, 0.0167, 0] (trigonal with length 13)

Kindly suggest the structuring element for proper dilation.