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Table 2 NFR calculated for the range of redwood and redwood sub-regions by distance from the Pacific Coast in 5 kilometer distance classes. “NA” (not applicable) denotes classes in which redwood was not present.

From: Geographic analysis of natural fire rotation in the California Redwood Forest during the suppression era

distance classes

redwood range

redwood sub-regions

(km)

(Years)

north (Years)

central (Years)

south (Years)

5

648

11,471

659

196

10

525

1,247

491

583

15

1,761

4,209

1,149

2,609

20

1,782

2,660

2,812

689

25

446

308

504

11,474

30

769

457

2,330

NA

35

324

393

230

NA

40

911

1,407

230

NA

45

470

NA

168

NA

50

1,180

NA

1,180

NA