Atra                  package:NADA                  R Documentation

_A_t_r_a_z_i_n_e _c_o_n_c_e_n_t_r_a_t_i_o_n_s _i_n _N_e_b_r_a_s_k_a _g_r_o_u_n_d _w_a_t_e_r

_D_e_s_c_r_i_p_t_i_o_n:

     Atrazine concentrations in a series of Nebraska wells before
     (June) and after (September) the growing season.

     Objective is to determine if concentrations increase from June to
     September. There is one detection limit, at 0.01 ug/L.  Used in
     Chapters 4, 5, and 9 of the NADA book.

_U_s_a_g_e:

     data(Atra)

_S_o_u_r_c_e:

     Junk et al., 1980, Journal of Environmental Quality 9, pp.
     479-483.

_R_e_f_e_r_e_n_c_e_s:

     Helsel, Dennis R. (2005).  Nondectects and Data Analysis;
     Statistics for censored environmental data.  John Wiley and Sons,
     USA, NJ.

