datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,19.88231,4.388435,4.723909
sgpcmbeC1.c1,2007,03 7:30:00,27 ,4.557718,48.05016,21.53005,11.96115
sgpcmbeC1.c1,2007,03 8:30:00,24 ,3.212687,59.73446,21.60659,18.90876
sgpcmbeC1.c1,2007,03 9:30:00,26 ,1.886274,112.3005,32.53577,28.48059
sgpcmbeC1.c1,2007,0310:30:00,26 ,0.986966,99.17834,36.47698,33.01421
sgpcmbeC1.c1,2007,0311:30:00,27 ,0.904945,162.5518,35.22845,39.01684
sgpcmbeC1.c1,2007,0312:30:00,27 ,0.454626,164.5426,39.06245,39.80787
sgpcmbeC1.c1,2007,0313:30:00,27 ,0.632895,114.1323,33.35023,31.58208
sgpcmbeC1.c1,2007,0314:30:00,27 ,0.688648,152.3858,35.70447,37.82676
sgpcmbeC1.c1,2007,0315:30:00,28 ,1.403278, 142.057,33.51796,38.00045
sgpcmbeC1.c1,2007,0316:30:00,27 ,2.673998,64.72763,24.06035, 19.7474
sgpcmbeC1.c1,2007,0317:30:00,29 ,2.356846,503.2903,36.44657,90.39621
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,32.94146,12.07422,6.547622
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0322:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0323:30:00,26 ,       0,       0,       0,       0