datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 7:30:00,29 ,       0,7.033662,2.629356,2.069053
sgpcmbeC1.c1,1998,01 8:30:00,29 ,4.541735,84.31106,35.24553,19.40476
sgpcmbeC1.c1,1998,01 9:30:00,29 ,7.619269,156.7026,73.81991,37.56906
sgpcmbeC1.c1,1998,0110:30:00,29 ,19.52124,227.7829, 105.627,52.44888
sgpcmbeC1.c1,1998,0111:30:00,29 ,25.27015,275.8902,123.5106,56.71177
sgpcmbeC1.c1,1998,0112:30:00,29 ,40.27167,251.9804,133.2788,63.42276
sgpcmbeC1.c1,1998,0113:30:00,29 ,35.64772,270.8498, 135.276,58.83638
sgpcmbeC1.c1,1998,0114:30:00,29 ,40.80471,265.4076,134.8414,69.53454
sgpcmbeC1.c1,1998,0115:30:00,29 ,29.63389,184.5683,92.33608,49.21391
sgpcmbeC1.c1,1998,0116:30:00,29 ,9.458409,105.1907, 48.3267,22.54431
sgpcmbeC1.c1,1998,0117:30:00,29 ,0.696621,22.82348,10.23891,6.933187
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,0.190504,0.006804,0.036002
sgpcmbeC1.c1,1998,0119:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0120:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0122:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0123:30:00,27 ,       0,       0,       0,       0