csv result gives 2 records for 2am,8am, 2pm and 8pm --Why?

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  • Updated 6 years ago
I was reading a forum that showed the wunderground csv option. I tried it and the resulting dataset shows 2 records for 2am, 8am, 2pm and 8pm.
I'm curious as to why there are 2 records for these times. I did try different dates and found that this 2 record issue is fairly consistent.
I did get 2 records where the times were 1am, 7 am and 1pm , 7pm.
So, from my view there are 2 records for times - why?
Is it an error, or does it serve some purpose?
Using http://www.wunderground.com/history/a...

RESULT:
TimeEDT,TemperatureC,Dew PointC,Humidity,Sea Level PressurehPa,VisibilityKm,Wind Direction,Wind SpeedKm/h,Gust SpeedKm/h,Precipitationmm,Events,Conditions,WindDirDegrees,DateUTC
12:00 AM,14.0,13.0,94,1013.3,24.1,WNW,9.3,-,N/A,,Mostly Cloudy,290,2013-05-10 04:00:00
1:00 AM,17.0,13.0,77,1013.6,24.1,North,18.5,-,N/A,,Mostly Cloudy,350,2013-05-10 05:00:00
2:00 AM,15,11,68,1014,24,NNW,20.4,,,,Partly Cloudy,330,2013-05-10 06:00:00
2:00 AM,15.0,11.0,77,1014.2,24.1,NW,22.2,-,N/A,,Scattered Clouds,320,2013-05-10 06:00:00
3:00 AM,14.0,7.0,63,1014.2,24.1,NNW,24.1,-,N/A,,Partly Cloudy,340,2013-05-10 07:00:00
4:00 AM,13.0,6.0,63,1014.3,24.1,NNW,20.4,29.6,N/A,,Partly Cloudy,340,2013-05-10 08:00:00
5:00 AM,12.0,5.0,62,1014.7,24.1,NNW,16.7,-,N/A,,Mostly Cloudy,330,2013-05-10 09:00:00
6:00 AM,11.0,5.0,67,1015.5,24.1,North,14.8,-,N/A,,Mostly Cloudy,350,2013-05-10 10:00:00
7:00 AM,11.0,3.0,58,1015.9,24.1,NNE,16.7,-,N/A,,Mostly Cloudy,20,2013-05-10 11:00:00
8:00 AM,11,3,47,1016,24,North,20.4,,,,Mostly Cloudy,10,2013-05-10 12:00:00
8:00 AM,11.0,3.0,58,1016.3,24.1,North,20.4,-,N/A,,Mostly Cloudy,360,2013-05-10 12:00:00
9:00 AM,12.0,4.0,58,1016.4,24.1,NNE,14.8,-,N/A,,Mostly Cloudy,20,2013-05-10 13:00:00
10:00 AM,14.0,5.0,55,1016.2,24.1,North,14.8,-,N/A,,Mostly Cloudy,360,2013-05-10 14:00:00
11:00 AM,15.0,7.0,59,1015.8,24.1,NE,9.3,-,N/A,,Mostly Cloudy,40,2013-05-10 15:00:00
12:00 PM,17.0,8.0,55,1015.6,24.1,East,11.1,-,N/A,,Mostly Cloudy,100,2013-05-10 16:00:00
1:00 PM,16.0,9.0,63,1015.1,24.1,ENE,11.1,-,N/A,,Overcast,60,2013-05-10 17:00:00
2:00 PM,16,9,54,1014,24,NNE,16.7,,,,Overcast,30,2013-05-10 18:00:00
2:00 PM,16.0,9.0,63,1014.5,24.1,NNE,13.0,-,N/A,,Overcast,30,2013-05-10 18:00:00
3:00 PM,16.0,8.0,59,1013.7,24.1,NNE,20.4,-,N/A,,Overcast,20,2013-05-10 19:00:00
3:06 PM,16.0,8.0,59,1013.6,24.1,NNE,16.7,-,N/A,Rain,Light Rain,20,2013-05-10 19:06:00
4:00 PM,15.0,10.0,72,1012.5,24.1,NNE,20.4,-,N/A,Rain,Light Rain,30,2013-05-10 20:00:00
4:53 PM,14.0,8.0,67,1012.2,24.1,North,20.4,31.5,N/A,,Overcast,360,2013-05-10 20:53:00
5:00 PM,13.0,8.0,72,1012.3,24.1,North,24.1,-,N/A,Rain,Light Rain,350,2013-05-10 21:00:00
6:00 PM,11.0,9.0,88,1011.2,24.1,NNE,18.5,-,N/A,Rain,Light Rain,30,2013-05-10 22:00:00
6:45 PM,11.0,10.0,94,1010.6,16.1,NNE,18.5,-,N/A,Rain,Light Rain,30,2013-05-10 22:45:00
7:00 PM,11.0,10.0,94,1010.6,8.0,NE,18.5,-,N/A,Rain,Light Rain,40,2013-05-10 23:00:00
8:00 PM,10,10,94,1009,8,NE,27.8,,,Rain,Light Rain,50,2013-05-11 00:00:00
8:00 PM,11.0,10.0,94,1008.8,8.0,NE,25.9,35.2,N/A,Rain,Light Rain,50,2013-05-11 00:00:00
9:00 PM,11.0,10.0,94,1008.4,9.7,ENE,29.6,-,N/A,Rain,Light Rain,60,2013-05-11 01:00:00
9:28 PM,11.0,11.0,100,1008.1,12.9,ENE,22.2,31.5,N/A,Rain,Light Rain,60,2013-05-11 01:28:00
9:50 PM,12.0,11.0,94,1008.0,11.3,ENE,33.3,48.2,N/A,Rain,Light Rain,70,2013-05-11 01:50:00
10:00 PM,12.0,11.0,94,1008.1,12.9,East,20.4,46.3,N/A,Rain,Light Rain,80,2013-05-11 02:00:00
11:00 PM,12.0,11.0,94,1007.2,19.3,East,25.9,-,N/A,,Overcast,90,2013-05-11 03:00:00
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