datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,3 ,       0,3.842849,2.342726,2.055324
sgpcmbeC1.c1,2005,08 1:30:00,3 ,       0,22.67528,7.951415,12.76486
sgpcmbeC1.c1,2005,08 2:30:00,4 ,       0,45.28206,11.36688,22.61029
sgpcmbeC1.c1,2005,08 3:30:00,4 ,       0,39.57959,9.924697,19.77001
sgpcmbeC1.c1,2005,08 4:30:00,3 ,       0, 47.2436,15.85511,27.18371
sgpcmbeC1.c1,2005,08 5:30:00,6 ,       0,61.51783,10.32147,25.08153
sgpcmbeC1.c1,2005,08 6:30:00,6 ,       0, 94.4183,27.41026,43.15178
sgpcmbeC1.c1,2005,08 7:30:00,4 ,       0,111.0167,27.78408,55.48844
sgpcmbeC1.c1,2005,08 8:30:00,2 ,1.601595,173.7314, 87.6665,121.7142
sgpcmbeC1.c1,2005,08 9:30:00,2 ,1.383095,154.5569,   77.97,108.3102
sgpcmbeC1.c1,2005,0810:30:00,1 ,0.946983,0.946983,0.946983,       .
sgpcmbeC1.c1,2005,0811:30:00,1 ,1.721557,1.721557,1.721557,       .
sgpcmbeC1.c1,2005,0812:30:00,1 ,2.240148,2.240148,2.240148,       .
sgpcmbeC1.c1,2005,0813:30:00,1 , 2.79386, 2.79386, 2.79386,       .
sgpcmbeC1.c1,2005,0814:30:00,1 ,1.449996,1.449996,1.449996,       .
sgpcmbeC1.c1,2005,0815:30:00,1 ,1.721076,1.721076,1.721076,       .
sgpcmbeC1.c1,2005,0816:30:00,1 ,2.894023,2.894023,2.894023,       .
sgpcmbeC1.c1,2005,0817:30:00,2 ,1.516997, 110.653,  56.085,77.17081
sgpcmbeC1.c1,2005,0818:30:00,3 ,1.051124,146.4647,50.06097,83.49198
sgpcmbeC1.c1,2005,0819:30:00,3 ,1.500386,21.48559,8.647014, 11.1423
sgpcmbeC1.c1,2005,0820:30:00,3 ,       0,0.984978,0.429317,0.504497
sgpcmbeC1.c1,2005,0821:30:00,4 ,       0,21.05743,5.782102, 10.2068
sgpcmbeC1.c1,2005,0822:30:00,4 ,       0,12.58731,4.071165,5.759247
sgpcmbeC1.c1,2005,0823:30:00,3 ,       0,2.474076,1.007533,1.299339