Ionospheric climatology observed between October and December 2003 over Ny-Ålesund obtained by binning the data for conditions of IMF B_Z > 0 (left column) and B_Z < 0 (right column). Black and red curves reproduce the Feldstein model auroral ovals for IQ = 3 and IQ = 6, respectively. From the top: (a) percentage occurrence of phase scintillation, and (b) percentage occurrence of amplitude scintillation, (c) ROT, and (d) standard deviation of ROT.