B: Net Sizing and Sensor Layouts
122
Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007
The HCGSN features a snugger fit than the GSN 200 and has a different sizing chart.
This chart is ordered by head circumference, rather than age, and differentiates
between gender. If you are unsure of the range of head circumference you will be
testing, we recommend selecting at least one Net above and below the age range of
interest.
The approximate age ranges for U.S. infants are taken from the 50th Percentile on
The Centers for Disease Control and Prevention (CDC) Growth Charts, published in
May 2000 (“50th Percentile” means that half of the children will have a larger head
circumference and half will have a smaller head circumference). The charts are
available for download at http://www.cdc.gov/nchs/data/nhanes/growthcharts/
set1/chart09.pdf and at http://www.cdc.gov/nchs/data/nhanes/growthcharts/
set1/chart10.pdf.
EGI recommends that customers consult infant growth charts for their own country
as growth statistics may vary.
Table B-2 lists all the sizes for the HCGSN.
Table B-2. HCGSN sizing chart
Head circumference Male Female
Infant
36–37 cm. Birth–2 weeks Birth–1 month
37–38 cm. 2 weeks–1 month 1–2 months
38–40 cm. 1–2 months 2–3 months
40–42 cm. 2–3 months 3–6 months
42–43 cm. 3–5 months 6–7 months
43–44 cm. 5–7 months 7–9 months
44–47 cm. 7–15 months 9–21 months
Pediatric
47–51 cm. Pediatric Small Pediatric Small
51–54 cm. Pediatric Large Pediatric Large
Adult
54–56 cm. Adult Small Adult Small
56–58 cm. Adult Medium Adult Medium
58 cm. and above Adult Large Adult Large
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