I have precipitation data collected in 5minutes time steps as presented in CSV format as below.

DateTime,PR00,PR05,PR10,PR15,PR20,PR25,PR30,PR35,PR40,PR45,PR50,PR55
12/31/2013 0:00,0,0.4,0.6,0,0,0,0,0,0,0.2,0.6,0
12/31/2013 1:00,0,0.4,0.4,0.2,0.6,0.6,1.2,0.4,0,0.2,0,0.4
12/31/2013 2:00,0,0,0,0,0,0,0,0,0,0,0,0
12/31/2013 3:00,0,0,0,0,0,0,0,0,0,0,0,0
12/31/2013 4:00,0,0.2,0,0,0,0,0,0.2,0,0,0,0
12/31/2013 5:00,0,0,0,0,0,0,0,0,0,0,0,0
12/31/2013 6:00,0,0,0,0,0,0,0,0,0,0,0,0

The fisrst column is date with time in 1hr time step (rows), the columns are precipitation records at five (5) minutes time sptep for each hour. I would like to create a data frame of two colums of date (time) and the precipitation as follows:

Date,Precip
12/31/2013 0:00,0
12/31/2014 0:05,0.4
12/31/2015 0:10,0.6
12/31/2013 0:15,0
12/31/2013 0:20,0
12/31/2013 0:25,0
12/31/2013 0:30,0
12/31/2013 0:35,0
12/31/2013 0:40,0
12/31/2013 0:45,0.2
12/31/2013 0:50,0.6
12/31/2013 0:55,0
12/31/2013 1:00,0
12/31/2013 1:05,0.4
12/31/2013 1:10,0.4
12/31/2013 1:15,0.2
12/31/2013 1:20,0.6
12/31/2013 1:25,0.6
12/31/2013 1:30,1.2
12/31/2013 1:35,0.4
12/31/2013 1:40,0
12/31/2013 1:45,0.2
12/31/2013 1:50,0
12/31/2013 1:55,0.4
12/31/2013 2:00,0
12/31/2013 2:05,0
12/31/2013 2:10,0
12/31/2013 2:15,0
12/31/2013 2:20,0
12/31/2013 2:25,0
12/31/2013 2:30,0
12/31/2013 2:35,0
12/31/2013 2:40,0
12/31/2013 2:45,0
12/31/2013 2:50,0
12/31/2013 2:55,0
12/31/2013 3:00,0
12/31/2013 3:05,0
12/31/2013 3:10,0
12/31/2013 3:15,0
12/31/2013 3:20,0
12/31/2013 3:25,0
12/31/2013 3:30,0
12/31/2013 3:35,0
12/31/2013 3:40,0
12/31/2013 3:45,0
12/31/2013 3:50,0
12/31/2013 3:55,0
12/31/2013 4:00,0
12/31/2013 4:05,0.2
12/31/2013 4:10,0
12/31/2013 4:15,0
12/31/2013 4:20,0
12/31/2013 4:25,0
12/31/2013 4:30,0
12/31/2013 4:35,0.2
12/31/2013 4:40,0
12/31/2013 4:45,0.2
12/31/2013 4:50,0
12/31/2013 4:55,0
12/31/2013 5:00,0
12/31/2013 5:05,0
12/31/2013 5:10,0
12/31/2013 5:15,0
12/31/2013 5:20,0
12/31/2013 5:25,0
12/31/2013 5:30,0
12/31/2013 5:35,0
12/31/2013 5:40,0
12/31/2013 5:45,0
12/31/2013 5:50,0
12/31/2013 5:55,0
12/31/2013 6:00,0
12/31/2013 6:05,0
12/31/2013 6:10,0
12/31/2013 6:15,0
12/31/2013 6:20,0
12/31/2013 6:25,0
12/31/2013 6:30,0
12/31/2013 6:35,0
12/31/2013 6:40,0
12/31/2013 6:45,0
12/31/2013 6:50,0
12/31/2013 6:55,0

Kindly Helpp.