50 and <=100]]> China, Russia, North Korea, South Korea, Japan 50-100 mm 38658165 22 5502824 549484 12445521 16620127 3540209 3 0 7 9 1 100 and <=250]]> China, North Korea, South Korea, Japan 100-250 mm 58612133 38 16933419 0 11833022 28580715 1264977 10 0 7 18 0 250 and <=500]]> North Korea, South Korea, Japan 250-500 mm 604526 0 0 0 572338 22804 9384 0 0 0 0 0 500 and <=750]]> 500-750 mm 0 0 750 and <=1000]]> 750-1000 mm 0 0 1000 and <=10000]]> more than 1000 mm 0 0