Final answer:
A spar drilling rig can be set up in about an hour for each set of spectra, with as many as 5000 spectra possible in one night.
Step-by-step explanation:
The time it takes to set up a spar drilling rig depends on various factors such as the experience of the crew, the complexity of the rig, and the weather conditions. However, based on the provided information, it takes about an hour for each set of spectra to be completed.
In addition, the pre-drilled aluminum plates can be switched quickly, which allows for efficient rig setup. This means that multiple sets of spectra can be taken in one night, with as many as 5000 spectra possible if the weather is good enough.
Overall, while the setup time can vary, the information suggests that a spar drilling rig can be set up relatively quickly, especially by an experienced crew.