Fast Rising Trends in 30 yr trend
mm/yr  id    lat    lon        name
 13.1 1442 43.26667 145.5667  HANASAKI II 
 17.4 1060 34.06667 139.4833  MIYAKE SIMA   
 14.9  145 14.58333 120.9667  MANILA, S. HARBOR  

Fast Rising Trend in 17 yr trend
mm/yr  id    lat    lon        name           
 40.7 1060 34.06667 139.4833  MIYAKE SIMA 

Fast Falling Trend in 17 yr trend
mm/yr  id    lat    lon        name              
-34.3  444 13.55  100.5833  FORT PHRACHULA CHOMKLAO (POM PHRACHUN) 
-20.0  495 59.45 -135.3167  SKAGWAY  

Fast Falling Trends in 30 yr trend
mm/yr  id    lat    lon        name
-17.3 1061 34.20  139.1333  KOZU SIMA 
-16.1 1343 34.90  139.1333  ITO II
-12.7  445 59.55 -139.7333  YAKUTAT 
-19.0  495 59.45 -135.3167  SKAGWAY
-15.5  405 58.30 -134.4167  JUNEAU


> mean(trend17,na.rm=TRUE)
[1] 2.780812

> mean(trend30,na.rm=TRUE)
[1] 1.765397

> sum(!is.na(trend17))
[1] 562

> sum(!is.na(trend30))
[1] 444