datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,14.72639, 3.40894,3.795071
sgpcmbeC1.c1,2004,03 7:30:00,31 ,       0,68.80032,36.41244,17.08103
sgpcmbeC1.c1,2004,03 8:30:00,31 ,4.478446,164.2296,77.05711,35.70287
sgpcmbeC1.c1,2004,03 9:30:00,31 ,3.776463,254.8918,106.5835,66.78729
sgpcmbeC1.c1,2004,0310:30:00,31 ,23.40927,360.2665,133.9988,89.87128
sgpcmbeC1.c1,2004,0311:30:00,31 ,43.47252, 473.546,149.3533,108.1204
sgpcmbeC1.c1,2004,0312:30:00,31 , 33.5593,468.5309,165.6145,123.4063
sgpcmbeC1.c1,2004,0313:30:00,31 ,33.19427,500.5417,186.0688,142.8085
sgpcmbeC1.c1,2004,0314:30:00,31 ,24.51577,460.3809,165.0312,117.0791
sgpcmbeC1.c1,2004,0315:30:00,31 ,9.344143,314.1459,135.7867,83.76998
sgpcmbeC1.c1,2004,0316:30:00,31 , 29.7908,209.8327,100.3271,47.19384
sgpcmbeC1.c1,2004,0317:30:00,31 ,6.520488,104.6695,55.60209,25.57614
sgpcmbeC1.c1,2004,0318:30:00,31 ,       0,19.55421,9.718515,5.091975
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,       0,       0,       0