USGS Open-File Report 95-055: Table 1

Table 1. Beginning dates of SO2 and CO2 measurements at Cook Inlet volcanoes.

------------------------------------------------------------------------
   Volcano      SO2 start       number of     CO2 start      number of
                              measurements                  measurements
------------------------------------------------------------------------
   Redoubt     March, 1990        64         June,  1990         7
   Spurr       July,  1991        40         Sept., 1992        25
   Iliamna     March, 1990         9         Oct.,  1992         3
   Augustine   March, 1990         7         July,  1994         2

U.S. Department of Interior, U.S. Geological Survey
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