sunspots                package:base                R Documentation

_M_o_n_t_h_l_y _M_e_a_n _R_e_l_a_t_i_v_e _S_u_n_s_p_o_t _N_u_m_b_e_r_s

_D_e_s_c_r_i_p_t_i_o_n:

     Monthly sunspot numbers from 1749 to 1983. Collected at Swiss
     Federal Observatory, Zurich until 1960, then Tokyo Astronomical
     Observatory.

_U_s_a_g_e:

     data(sunspots)

_F_o_r_m_a_t:

     A time series of monthly data from 1749 to 1983.

_S_o_u_r_c_e:

     Andrews, D. F. and Herzberg, A. M. (1985) Data: A Collection of
     Problems from Many Fields for the Student and Research Worker. New
     York: Springer-Verlag.

_E_x_a_m_p_l_e_s:

     data(sunspots)
     plot(sunspots, main = "sunspots data", xlab = "Year",
          ylab = "Monthly sunspot numbers")

