Since both images appear to be shot from the same location and about 2.5 minutes apart the ambient light should be the same.
There is actually about a 3-stop difference in the ambient exposure.
Image #1 : 1/60th sec. , f/4.5 @ ISO 1400 Image #2 : 1/200th sec., f/5.6 @ ISO 800
Shutter Speed - 1 2/3rd stops Aperture - 2/3rd stop ISO - just under 2/3rd stop
Image #2 is underexposed by just under 3 full stops compared to image #1 for the ambient light. Since Image #1 was slightly underexposed for ambient already, image #2 was underexposed by more than 3 stops.