26 | 24+ 22 + 20 14+ 127 10 _ 8+ 6+ a4 + 0.25 + Qo NUMBER IN CLASS 16 > nN 4. rr PI-00-4 18 4 + ere > Fr 1,25 225 425 5.25 3.25 CLASS CENTERS, STANDARD DEVIATIONSIN pCi/g 6.25 FIGURE B-20-10 ERRORS FROM ALPHA SPECTROSCOPY OF CHEMICALLY-EXTRACTED SOIL FROM JANET