datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,03 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 6:30:00,31 ,       0,5.192839,0.974325,1.350034
sgpcmbeC1.c1,1998,03 7:30:00,30 ,       0,38.16111,16.69995,13.08073
sgpcmbeC1.c1,1998,03 8:30:00,30 ,3.325491,117.2973,44.45862,31.66749
sgpcmbeC1.c1,1998,03 9:30:00,30 ,4.055381, 155.808,71.42995,  46.505
sgpcmbeC1.c1,1998,0310:30:00,31 ,5.208424, 155.932,84.41233, 52.5821
sgpcmbeC1.c1,1998,0311:30:00,31 ,9.061715,161.7577,96.71953,57.04379
sgpcmbeC1.c1,1998,0312:30:00,31 ,  7.4095,167.0112,103.3281,61.47946
sgpcmbeC1.c1,1998,0313:30:00,30 ,8.047578,  165.57,102.7315,60.36652
sgpcmbeC1.c1,1998,0314:30:00,31 ,5.884816,151.2356,89.70051,58.88659
sgpcmbeC1.c1,1998,0315:30:00,30 ,5.190925,133.4293, 74.7689,51.05433
sgpcmbeC1.c1,1998,0316:30:00,31 ,3.321645,91.44319,53.39089,35.90079
sgpcmbeC1.c1,1998,0317:30:00,31 , 1.79256,53.16589, 27.4894,18.29374
sgpcmbeC1.c1,1998,0318:30:00,31 ,       0, 14.3659,4.297073,3.959938
sgpcmbeC1.c1,1998,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0322:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0323:30:00,29 ,       0,       0,       0,       0