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The solution to last week's challenge can be found here!
This week's challenge comes to us from @Original_Yodies. For those of you who work in the energy sector, and specifically drilling, you'll get some industry-specific practice with this challenge!
You are given data with dates when a rotating component (a "washpipe") is replaced on a giant offshore drill called a "topdrive". Each month, you are also given daily data for the amount of time a rig is circulating and/or drilling.
Find the number of circulating or rotating hourse for each installation of a topdrive washpipe. Additional details and assumptions are provided in the start file.