A section (stair rail): The damaged part grew more bacteria, seen from the change of colour. Also, there is a small circle beside the damaged part.
B section (school lock): A tiny dot on the intersection between A and B. No other changes visible.
C section (handle of the main entrance): A small circle in the corner of the section.
D section (control): Two yellow large dots merged.
-D section had changed the most since the first observation.
The markings of Sarcina aurantiaca is more visible. The bacteria growths on the curve of the marking are more visible.
There seems to be almost no reaction near the discs except for the little yellow growth near the "F" disc, which is soaked in soap. However, a massive amount of pink growth is spread all over the disc. I think this was caused by the small red dot that was in the "E" section since the first observation.
