data_recorded_for_the_wrong_station.ipynb

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   "source": [
    "# An example of data recorded for the wrong station\n",
    " "
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   "source": [
    "There were several times when the Apollo data were recorded for the wrong station. Most of these times are quite short. We have searched for sections where data are copied from another section, and excluded these sections. We have also search for swapped sections, although these were harder to search for systematically. Larger sections have been swapped to the correct traces, and smaller sections excluded. "
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   "source": [
    "We can see changes to the centerline for both stations S12 and S15: "
   ]
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   "source": [
    "<img src=\"Electronic_Supplement/figs/1976-04-01-swapped-trace.png\" width=\"400\"/>"
   ]
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   "source": [
    "We can also see that the sampling interval on the data sampler suddenly changed on S12 and S15 (note also the sections on S12 and S16 which were recorded late due to an error with the tapehead):"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<img src=\"Electronic_Supplement/figs/1976-04-01-swapped-divergence.png\" width=\"600\"/>"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "These are the corrected traces:"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<img src=\"Electronic_Supplement/figs/1976-04-01-corrected-trace.png\" width=\"400\"/>"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Swapping the last section of S15 and S12 also fixes the timing error: "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<img src=\"Electronic_Supplement/figs/1976-04-01-corrected-divergence.png\" width=\"600\"/>"
   ]
  }
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