67

NUMBER IN CLASS

TT-0¢-d

4+

27

ot—

0.03

+

'

0.13

}

'

0.23

+

t

0.33

+———+

0.43

i

+

0.53

+—lL—+

CLASS CENTERS, STANDARD DEVIATIONS IN cM2

FIGURE B-20-7
ERRORS ON CRYSTAL EFFECTIVE AREA MEASUREMENTS
(THEORETICAL AREA = 19 cm)

“a

se

=~

_

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