{
  "id": 3408,
  "title": "What's with \"sample solution\"",
  "url": "/competitions/flight/discussion/3408",
  "author_name": "",
  "post_date": "2012-12-19T17:54:22.193Z",
  "votes": null,
  "comment_count": 3,
  "views": 3172,
  "content": "<p>These files have three fields per record, presumably fields 2 and 3 are the predicted runway arrival and gate arrival times. &nbsp;But let's look at line 2 of&nbsp;2012_11_19.csv:</p>\r\n<p>280778857,1083,1099</p>\r\n<p>I don't see how to assign any time units to fields 2 and 3 that make sense. &nbsp;For example, here is the (re-formatted) flight_history record for this flight history id:</p>\r\n<pre>flight_history_id : 280778857<br>airline_code : AA<br>airline_icao_code : <br>flight_number : 634<br>departure_airport_code : SNA<br>departure_airport_icao_code : KSNA<br>arrival_airport_code : DFW<br>arrival_airport_icao_code : KDFW<br>published_departure : MISSING<br>published_arrival : MISSING<br>scheduled_gate_departure : 2012-11-19 15:30:00&#43;00:00<br>actual_gate_departure : 2012-11-19 15:23:00&#43;00:00<br>scheduled_gate_arrival : 2012-11-19 18:30:00&#43;00:00<br>actual_gate_arrival : 2012-11-19 18:19:00&#43;00:00<br>scheduled_runway_departure : 2012-11-19 15:44:00&#43;00:00<br>actual_runway_departure : 2012-11-19 15:37:00&#43;00:00<br>scheduled_runway_arrival : 2012-11-19 18:42:00&#43;00:00<br>actual_runway_arrival : 2012-11-19 18:03:00&#43;00:00<br>creator_code : D<br>scheduled_air_time : 178<br>scheduled_block_time : 180<br>departure_airport_timezone_offset : -8<br>arrival_airport_timezone_offset : -6<br>scheduled_aircraft_type : <br>actual_aircraft_type : B738</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>It seems that this flight arrived at Dallas Fort Worth around 2 PM central time.  What do &quot;1083&quot; and &quot;1099&quot; mean?</pre>",
  "messages": [
    {
      "id": "18213",
      "postDate": "12/19/2012 17:54:22",
      "content": "<p>These files have three fields per record, presumably fields 2 and 3 are the predicted runway arrival and gate arrival times. &nbsp;But let's look at line 2 of&nbsp;2012_11_19.csv:</p>\r\n<p>280778857,1083,1099</p>\r\n<p>I don't see how to assign any time units to fields 2 and 3 that make sense. &nbsp;For example, here is the (re-formatted) flight_history record for this flight history id:</p>\r\n<pre>flight_history_id : 280778857<br>airline_code : AA<br>airline_icao_code : <br>flight_number : 634<br>departure_airport_code : SNA<br>departure_airport_icao_code : KSNA<br>arrival_airport_code : DFW<br>arrival_airport_icao_code : KDFW<br>published_departure : MISSING<br>published_arrival : MISSING<br>scheduled_gate_departure : 2012-11-19 15:30:00&#43;00:00<br>actual_gate_departure : 2012-11-19 15:23:00&#43;00:00<br>scheduled_gate_arrival : 2012-11-19 18:30:00&#43;00:00<br>actual_gate_arrival : 2012-11-19 18:19:00&#43;00:00<br>scheduled_runway_departure : 2012-11-19 15:44:00&#43;00:00<br>actual_runway_departure : 2012-11-19 15:37:00&#43;00:00<br>scheduled_runway_arrival : 2012-11-19 18:42:00&#43;00:00<br>actual_runway_arrival : 2012-11-19 18:03:00&#43;00:00<br>creator_code : D<br>scheduled_air_time : 178<br>scheduled_block_time : 180<br>departure_airport_timezone_offset : -8<br>arrival_airport_timezone_offset : -6<br>scheduled_aircraft_type : <br>actual_aircraft_type : B738</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>It seems that this flight arrived at Dallas Fort Worth around 2 PM central time.  What do &quot;1083&quot; and &quot;1099&quot; mean?</pre>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "18216",
      "postDate": "12/19/2012 18:03:35",
      "content": "In addition, there are several duplicate rows (nof rows in the combined file vs sum of nof rows in individual ones).",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "18222",
      "postDate": "12/19/2012 19:25:08",
      "content": "<p>It's all in the rules/wiki:</p>\r\n<p>1083 = 18 *&nbsp;<em>60 &#43; 3 = actual runway arrival in minutes after midnight of that day<br>\r\n1099 = 18 *&nbsp;</em>60 &#43; 19 = actual gate arrival...</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "18295",
      "postDate": "12/20/2012 21:51:01",
      "content": "<p>Thanks. &nbsp;Actually, I didn't find it in the rules, but under &quot;submission instructions&quot;. &nbsp;</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 18216,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "12/19/2012 18:03:35",
      "content": "In addition, there are several duplicate rows (nof rows in the combined file vs sum of nof rows in individual ones).",
      "votes": null,
      "replies": []
    },
    {
      "id": 18222,
      "author_name": "davidleen",
      "author_url": "",
      "post_date": "12/19/2012 19:25:08",
      "content": "<p>It's all in the rules/wiki:</p>\r\n<p>1083 = 18 *&nbsp;<em>60 &#43; 3 = actual runway arrival in minutes after midnight of that day<br>\r\n1099 = 18 *&nbsp;</em>60 &#43; 19 = actual gate arrival...</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 18295,
      "author_name": "dranalytica",
      "author_url": "",
      "post_date": "12/20/2012 21:51:01",
      "content": "<p>Thanks. &nbsp;Actually, I didn't find it in the rules, but under &quot;submission instructions&quot;. &nbsp;</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "18213": "",
    "18216": "",
    "18222": "",
    "18295": ""
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  "source": "meta"
}