datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,04 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 5:30:00,28 ,       0,2.261903,0.237741, 0.56789
sgpcmbeC1.c1,2004,04 6:30:00,28 ,0.000093,42.06937,14.85037, 15.1742
sgpcmbeC1.c1,2004,04 7:30:00,28 ,0.047254,83.19034, 29.9425, 28.2148
sgpcmbeC1.c1,2004,04 8:30:00,28 ,0.057953,159.3287,45.54212, 44.4611
sgpcmbeC1.c1,2004,04 9:30:00,29 , 0.12324,121.3335,36.06954,29.84715
sgpcmbeC1.c1,2004,0410:30:00,29 ,0.111167,250.6513,70.56122,68.22332
sgpcmbeC1.c1,2004,0411:30:00,29 ,0.656741,252.3353,74.31152,85.15122
sgpcmbeC1.c1,2004,0412:30:00,29 ,0.585638,244.1315,65.54275,80.57331
sgpcmbeC1.c1,2004,0413:30:00,29 ,0.763331,236.9937,61.01778,68.69332
sgpcmbeC1.c1,2004,0414:30:00,29 ,0.095843,279.6537,72.43691,78.89819
sgpcmbeC1.c1,2004,0415:30:00,29 , 0.06103,224.3303,60.37815,55.40387
sgpcmbeC1.c1,2004,0416:30:00,29 ,       0,130.0966,57.66489,42.50156
sgpcmbeC1.c1,2004,0417:30:00,29 ,       0, 68.0901,31.60304,25.37248
sgpcmbeC1.c1,2004,0418:30:00,29 ,       0,45.90949,14.09201,14.95463
sgpcmbeC1.c1,2004,0419:30:00,29 ,       0,1.826312,0.190057,0.480007
sgpcmbeC1.c1,2004,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0421:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0422:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0423:30:00,27 ,       0,       0,       0,       0