datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 2:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 3:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 4:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 5:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 6:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 7:30:00,30 ,       0,13.57573,2.314165,3.292725
sgpcmbeC1.c1,2007,12 8:30:00,30 ,       0,48.76368,18.49709,20.04606
sgpcmbeC1.c1,2007,12 9:30:00,30 ,0.054353,114.4806,23.09014,26.91449
sgpcmbeC1.c1,2007,1210:30:00,30 ,0.067131,104.6439,25.69865,29.66602
sgpcmbeC1.c1,2007,1211:30:00,30 ,0.067058,108.1049,19.88368,29.61075
sgpcmbeC1.c1,2007,1212:30:00,30 ,0.122233,164.6634,17.54131,38.16412
sgpcmbeC1.c1,2007,1213:30:00,30 ,       0,144.3388,19.34409,31.60395
sgpcmbeC1.c1,2007,1214:30:00,30 ,0.051479,150.0411,32.11172,36.47556
sgpcmbeC1.c1,2007,1215:30:00,30 ,0.045174,97.64547,28.89488,26.95218
sgpcmbeC1.c1,2007,1216:30:00,30 ,0.008183,41.14216,18.09841,17.48815
sgpcmbeC1.c1,2007,1217:30:00,30 ,       0,6.046692,1.363715,1.607752
sgpcmbeC1.c1,2007,1218:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1220:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1221:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1222:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1223:30:00,15 ,       0,       0,       0,       0