Fig. 1.
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Helios 2 measurements during days 45−110 of 1976. From top to bottom: solar wind bulk speed Vsw, distance from the Sun R, proton density np, and magnetic field magnitude B. Colored shaded areas identify the selected streams at 0.3 au (red), 0.7 au (green) and 0.9 au (blue). Lighter (darker) colors indicate slow (fast) streams.
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