THE SPATIAL VARIABILITY OF RAINFALL pH IN THE WASHINGTON, D.C METROPOLITAN AREA Footnote∗

∗We thank the volunteer observers: S. Adams, C. E. Arens, E. W. Bennington, C. Bubb, O. Byrd, E. M. Callicott, V. Castello, V. Clayton, P. H. Dernoden, J. Ernst, W. Grimes, P. Groves, R. A. Harper, S. Heidel, R. Holden, F. Kniskern, C. Lambert, R. Leffler, J. M. Mitchell, R. Mitchell, D. R. Monro, Jr., J. Pearl, D. Sammons, S. W. Sawyer, T. Tellerico, D. Thompson, J. A. Wagner and B. Young; and the U.S. Weather Service's Synoptic Forecasting Branch in Camp Springs, MD. A grant from the General Research Board of the University of Maryland provided new rain gauges and laboratory supplies. We also acknowledge the advice of two anonymous reviewers and R. Mitchell's editorial suggestions.

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• ∗We thank the volunteer observers: S. Adams, C. E. Arens, E. W. Bennington, C. Bubb, O. Byrd, E. M. Callicott, V. Castello, V. Clayton, P. H. Dernoden, J. Ernst, W. Grimes, P. Groves, R. A. Harper, S. Heidel, R. Holden, F. Kniskern, C. Lambert, R. Leffler, J. M. Mitchell, R. Mitchell, D. R. Monro, Jr., J. Pearl, D. Sammons, S. W. Sawyer, T. Tellerico, D. Thompson, J. A. Wagner and B. Young; and the U.S. Weather Service's Synoptic Forecasting Branch in Camp Springs, MD. A grant from the General Research Board of the University of Maryland provided new rain gauges and laboratory supplies. We also acknowledge the advice of two anonymous reviewers and R. Mitchell's editorial suggestions.
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