Optimize pandas operations in cloud export data transformation #922

Job	Run time
build-lint-test (3.10, ubuntu-latest)	5m 49s
build-lint-test (3.10, macos-arm)	5m 37s
build-lint-test (3.13, macos-intel)	9m 7s
build-lint-test (3.10, windows-latest)	6m 25s
build-lint-test (3.10, macos-intel)	6m 49s
build-lint-test (3.13, macos-arm)	7m 0s
build-lint-test (3.13, windows-latest)	10m 22s
build-lint-test (3.13, ubuntu-latest)	8m 45s
	59m 54s

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