This is the estimated number of attendees at the rally held the other day in Madrid against the privatization of public health and law convened 15/97 by the Board of Health Workers, CASmadrid (CNT, Solidaridad Obrera, EMT Association Platform, SAS and Ecologists in Action).
count was made at 20:00, when the head of the demonstration was coming to Sun from Alcalá. When to count a single person, was in header and the event ran in the opposite direction in about three and half minutes (the movement of the event during that time is negligible for the calculation). The photographs used for control are to count these . Based on these data, the area occupied by the demonstration at that time was roughly as follows, using Google Planimeter to delimit:
Being the total area of \u200b\u200b4051 m 2 and assuming an average density of 2 and 3 people , the number of attendees would be established in the range between 8100 and 12100 people, about . Given the significant gaps are seen in photographs of control, consider that the smaller figure is the closest to real number.
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