sunspots              package:datasets              R Documentation

_M_o_n_t_h_l_y _S_u_n_s_p_o_t _N_u_m_b_e_r_s, _1_7_4_9-_1_9_8_3

_D_e_s_c_r_i_p_t_i_o_n:

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

_U_s_a_g_e:

     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.

_S_e_e _A_l_s_o:

     'sunspot.month' has a longer (and a bit different) series.

_E_x_a_m_p_l_e_s:

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