datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 2:30:00,30 ,       0,0.399536,0.013318,0.072945
sgpcmbeC1.c1,1998,04 3:30:00,30 ,       0,0.517443,0.017248,0.094472
sgpcmbeC1.c1,1998,04 4:30:00,30 ,       0,0.049832,0.001661,0.009098
sgpcmbeC1.c1,1998,04 5:30:00,30 ,       0,4.183223,0.600767,1.023474
sgpcmbeC1.c1,1998,04 6:30:00,30 ,6.630496,62.39571,27.49705,12.68484
sgpcmbeC1.c1,1998,04 7:30:00,30 ,26.92887,153.4974,77.52907,32.06279
sgpcmbeC1.c1,1998,04 8:30:00,30 ,62.98033, 269.302,130.7168,59.25522
sgpcmbeC1.c1,1998,04 9:30:00,30 , 72.6137,345.9756,160.1624,81.08865
sgpcmbeC1.c1,1998,0410:30:00,30 ,47.68657,410.3336, 180.573,101.8271
sgpcmbeC1.c1,1998,0411:30:00,30 ,73.59152,396.3455,180.3726,87.50911
sgpcmbeC1.c1,1998,0412:30:00,30 ,64.45345, 436.277,  189.14,95.14113
sgpcmbeC1.c1,1998,0413:30:00,30 ,69.26781,374.8659,180.4199,84.54324
sgpcmbeC1.c1,1998,0414:30:00,30 ,77.72166,335.1387,177.3345,78.02119
sgpcmbeC1.c1,1998,0415:30:00,30 , 76.5251,296.3098,166.7034,64.67007
sgpcmbeC1.c1,1998,0416:30:00,30 ,69.67477,246.1349,122.1169,43.57055
sgpcmbeC1.c1,1998,0417:30:00,30 ,11.26468,144.1481,77.57825,29.40995
sgpcmbeC1.c1,1998,0418:30:00,30 ,1.326656,53.57561,30.07393,13.33284
sgpcmbeC1.c1,1998,0419:30:00,30 ,       0,4.157428, 0.78892,  0.9339
sgpcmbeC1.c1,1998,0420:30:00,30 ,       0,0.419279,0.013976,0.076549
sgpcmbeC1.c1,1998,0421:30:00,30 ,       0,0.107871,0.004943,0.020792
sgpcmbeC1.c1,1998,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0423:30:00,30 ,       0,0.873313,0.033377,0.160348