Z11455950                       USGS 
H11455950       3829161222850000606055SW180500024.50           303.04           
N11455950       SULPHUR C NR ST HELENA CA
Y11455950       
311455950       19551221                      15.80                      
311455950       19580224    924               13.53                      
311455950       19590216    470               11.67                      
311455950       19600208    860               13.32                      
311455950       19610131    400               11.04                      
311455950       19620214    435               11.48                      
311455950       19621014    645               12.43                      
311455950       19640120    235               10.46                      
311455950       19641223    980               10.80                      
311455950       19660105    506               10.51                      
311455950       19670121    518               10.77                      
311455950       19690121    305                9.99                      
311455950       19701203    570               11.08                      
311455950       19720127    590               11.08                      
311455950       19730116    465               10.49