This may make more sense if it's normalised by the size of each hospital? Small hospitals are immediately at limit and make a red dot for obvious reasons.
For example, there's a red circle next to Bremen, Alle-Weser-Klinik Verden, they have 131 beds [1]. Verden has about 27k inhabitants. There's a large blue circle in Baden-Wuerttenberg, Klinikum am Gesundbrunnen, they have 970 beds [2]. It's in Heilbronn which has 120k inhabitants.
For example, there's a red circle next to Bremen, Alle-Weser-Klinik Verden, they have 131 beds [1]. Verden has about 27k inhabitants. There's a large blue circle in Baden-Wuerttenberg, Klinikum am Gesundbrunnen, they have 970 beds [2]. It's in Heilbronn which has 120k inhabitants.
So in a way, this is a population density map https://xkcd.com/1138/
[1] https://de.wikipedia.org/wiki/Aller-Weser-Klinik
[2] https://www.slk-kliniken.de/ueber-uns/daten-fakten/die-slk-k...