Bicimad is a public bike rental system of the city of Madrid. Many bike stations are correctly placed in the maps. However, some of them have been messed up. It looks as if at some time they were properly placed, since they contain information, but now they appear in a straight line, equally spaced.
In the following image, it can be seen that stations located in the centre and south of the city are well distributed around the map, while stations in the north form a straight line. The image has been taken from osmand, small points are also rental stations, and more appear when zooming in.
I tried to fix them one by one, but my computer is too slow to perform so many editions. Is there any way to check if the stations have ever been in the right place and, if possible, revert the change that moved them? I have been looking how to do it but I am new to OSM and I did not want to break anything.
On the other hand, in my opinion, the name of the node should be Bicimad, and the number of the station should be included somewhere else. However, many of them have the number of the station as name of the node, without saying that this is a bicimad station.
I found the incorrect line of bicycle stations in Madrid. The south west end of the line is here and the north east end is here. You can see some of the lined up nodes with the bicycle icon on my links to the map.
One year ago the mapper has changed some attributes of the nodes and added some new ones and then accidentially pressed a key to put them all into a line with an equal distance of about 100 m.
A revert would put the stations, on which he changed some attributes back to their original position, but would remove the new ones. So a revert should only be done on the nodes with a version >= 2.