50 and <=100]]> China, North Korea, South Korea, Japan 50-100 mm 67781931 39 8252435 7973791 40323572 11232133 4 4 23 6 100 and <=250]]> China, North Korea, South Korea, Japan 100-250 mm 12879434 8 1672562 979376 8688091 1539405 1 0 5 0 250 and <=500]]> China, Japan 250-500 mm 5059 0 2820 0 0 2239 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