datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,0.000206, 12.0525,2.788631,3.506044
sgpcmbeC1.c1,1997,12 8:30:00,29 ,0.014709,51.60427,22.12123,20.74849
sgpcmbeC1.c1,1997,12 9:30:00,30 ,0.044464,116.9942,27.77519,28.01088
sgpcmbeC1.c1,1997,1210:30:00,30 ,0.051176,80.44051,17.64737,19.43496
sgpcmbeC1.c1,1997,1211:30:00,29 ,0.006796,153.0532,16.96884,29.17705
sgpcmbeC1.c1,1997,1212:30:00,29 ,0.066798,122.8735, 12.5484,26.66861
sgpcmbeC1.c1,1997,1213:30:00,29 ,0.072518,179.2224,27.35547,46.03265
sgpcmbeC1.c1,1997,1214:30:00,29 ,0.085136,150.6348,28.37911,37.87859
sgpcmbeC1.c1,1997,1215:30:00,29 ,0.022312,98.31226,29.47936,30.05787
sgpcmbeC1.c1,1997,1216:30:00,29 ,0.000077,43.54927,19.07435,18.87338
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0,6.333672,1.564929,  2.1241
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,       0,       0,       0