TABLE 1 (conta) Distribution and Activity Characteristics of Particle Size and Type Groups (XYFNB 13-Shot B, Activities at H + 300) Size Group (np) Number Frequency of Par- With Zero ticles 10-21 Spheroidal irreguiar Composite Activity (well c/m) Activity Minimum Maximum Median Group Dendrite-like Activity (well e/m) Activity (well e/m) Activity (well c/m) Frequency Median Group Frequency Median Group Frequency Median Group 27 8 0 250 33 1,488 19 35 868 8 29 620 So --- o-~ 22-30 ° 5h 22 0 399 25 3,014 38 2h 15933 16 38 1,681 0 --- --- 31-42 828 , 7 0 . 356 87 2,820 25 91 2,775 2 23 k5 1 0 0 43-60 19 3 )‘ 1,225 Th 2,707 15 Th 2,345 ) --+ woo 4 87 362 61-84 8 2 Oo 1,166 83 1,612 6 83 446 0 --- --- 2 583 1,166 85-120 11 h 0 2,4) 125 5,618 6 135 963 1 0 0 h 1,06 4,655 121-170 2 0 78 7,126 3,602 7,20h 1 78 78 9 --~ “<= 1 7,126 7,126 171-2h0 1 1 --+ 7 3 0 9 ~-- --- 3 -<~ --- 1 0 0 241-340 0 - --- --- --- ons - ~<- one - nee woe - --- --- 341-480 2 © 792,378 2 888,592 1,777,183 o --- --+ 0 awe ne= 481-680 1 1 --- --- 1 0 0 0 ~-- nen 1,786,591 27 1,7h6 12 Total 153 Contribution (4%) 984,805 888,592 1,777,183 w= 0 0 0 1,801,646 11h os TheS 99.2 19 17.6 O.1 7.8 13,309 0.7

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