Open-File Report 2006–1104

U.S. GEOLOGICAL SURVEY
Open-File Report 2006–1104

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Table 6. Plot symbol codes that identify the observation type in all “underscore” output files created during forward and parameter-sensitivity mode simulations.

[Abbreviations: m, meter; Symbol: ≥, greater than or equal to; ≤, less than or equal to; >, greater than; =, equal to]

Plot symbol Description
0 Head observation derived from few steady-state measurements.
1 Head observation derived from many steady-state measurements.
2 Head change observation ≥ 0.1 m and ≤ 1 m, standard deviation =1 m.
3 Head change observation < 0.1 m, standard deviation =1 m, or discharge observation, or constant head observation.
4 Head change observation > 1 m, standard deviation is a function of head change observation.

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