The monthly solar wind speed and density observed near 1 AU in IMF sectors of opposite magnetic
polarity are studied during the minimum of sunspot cycles 23 and 24. During sunspot minima, the IMF is
pointing away from the sun (Away sector) in the north of the Heliospheric Current Sheet (HCS) and
pointing towards the sun (Toward sector) in the south of HCS during odd sunspot cycles and the same
process is reversed during the even cycles. During this period, the solar wind plasma parameters
(number density and speed) show a systematic month to month variation with solar wind number
density decreases and velocity increases from equator to poles (heliomagnetic latitudinal organization)
only in ‘Away’ IMF sectors compared to ‘Toward’ IMF sectors. This feature is particularly more evident for
low speed solar wind and happens in a helio-hemisphere with a larger polar coronal hole. The association
of the above phenomena with north–south asymmetry in coronal and solar wind flow characteristics
will be discussed.