datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 7:30:00,29 ,       0,19.49264,10.55845,5.133329
sgpcmbeC1.c1,2004,02 8:30:00,29 ,2.825994,38.48347,15.54302,8.899043
sgpcmbeC1.c1,2004,02 9:30:00,29 ,1.919528,56.01634, 20.6966,16.78571
sgpcmbeC1.c1,2004,0210:30:00,29 ,1.363804,70.42458,26.81415,20.12124
sgpcmbeC1.c1,2004,0211:30:00,29 , 0.69343, 166.428,34.52887,38.42595
sgpcmbeC1.c1,2004,0212:30:00,29 ,0.933114,126.8601,32.49232,32.54256
sgpcmbeC1.c1,2004,0213:30:00,29 ,1.160998, 170.609,35.60288,40.27634
sgpcmbeC1.c1,2004,0214:30:00,29 ,1.430181,87.14541, 23.7187,22.01174
sgpcmbeC1.c1,2004,0215:30:00,29 ,1.228903,90.43465,24.12274,20.19038
sgpcmbeC1.c1,2004,0216:30:00,29 ,1.669025,50.82589,19.91863, 14.5461
sgpcmbeC1.c1,2004,0217:30:00,29 ,       0,36.31264,18.20784,8.715372
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,8.127721,1.888174,2.261704
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0221:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0222:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0223:30:00,27 ,       0,       0,       0,       0