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Alida Elisabeth BERGSMA

b. May 1938
p. Velsen, , Noord-Holland, Netherlands
d. 8 Jan 1938
p. Velsen, , Noord-Holland, Netherlands

Jacob BERGSMA

b.
p.
d.
p.

Tjalke BERGSMA

b.
d.

Sjoukje WESSELIUS

b.
d.

Elizabeth Jacoba Alida van der PLAS

b. 4 Feb 1911
p. Velsen, , Noord-Holland, Netherlands
d.
p.

Jacobus van der PLAS

b. 22 Feb 1885
d. 24 Feb 1955

Gerrit van der PLAS

b. 21 Jul 1859
d. 2 Aug 1943

Cornelis Cornelisz van der PLAS

b. 1812
d. 22 Mar 1875

Maartje Jacobs GROEN

b. 1821
d. 9 Mar 1882

Elizabeth PIETERSON

b. 19 Jul 1862
d. 23 Oct 1943

Jacobus PIETERSON

b.
d.

Annigje de BOER

b.
d.

Alida Jacoba Maria ERNST

b. 22 Dec 1887
d.

Franciscus Johannes Fredericus ERNST

b. 13 Aug 1861
d.

Jacoba Alida EELTJES

b. 2 Apr 1865
d.

PIKWA - Performance Indicator Kwartierstaat

These Charts show the relative state of completion of an individual's Pedigree Chart. It compares the number of vital statistics currently found to the total required to fill ten generations out from the chosen person.

The PIKWA concept was developed by Otto P. van Driel in The Netherlands.
Adapted to our Pedigree Charts by Rob Vanderplas

Combined

2

(4/7) 57%

3

(8/14) 57%

4

(11/28) 39%

5

(9/56) 16%

6

(14/112) 12%

7

(24/224) 10%

8

(42/448) 9%

9

(55/896) 6%

Tot:

(167/1785) 9%

People

2

(2/2) 100%

3

(4/4) 100%

4

(4/8) 50%

5

(4/16) 25%

6

(4/32) 12%

7

(8/64) 12%

8

(14/128) 10%

9

(21/256) 8%

Tot:

(61/510) 11%

Birth Dates

2

(1/2) 50%

3

(2/4) 50%

4

(4/8) 50%

5

(2/16) 12%

6

(4/32) 12%

7

(7/64) 10%

8

(14/128) 10%

9

(16/256) 6%

Tot:

(50/510) 9%

Marriage Dates

2

(1/1) 100%

3

(1/2) 50%

4

(1/4) 25%

5

(1/8) 12%

6

(2/16) 12%

7

(3/32) 9%

8

(5/64) 7%

9

(7/128) 5%

Tot:

(21/255) 8%

Death Dates

2

(0/2) 0%

3

(1/4) 25%

4

(2/8) 25%

5

(2/16) 12%

6

(4/32) 12%

7

(6/64) 9%

8

(9/128) 7%

9

(11/256) 4%

Tot:

(35/510) 6%