datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 2:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 4:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 6:30:00,27 ,       0,7.545859,1.526252,2.081071
sgpcmbeC1.c1,2002,03 7:30:00,27 ,0.883345,46.67788,22.11337,14.84011
sgpcmbeC1.c1,2002,03 8:30:00,26 ,6.753462,124.3641,61.09544, 30.6592
sgpcmbeC1.c1,2002,03 9:30:00,27 ,7.989107,215.8905,93.08253,50.13147
sgpcmbeC1.c1,2002,0310:30:00,28 ,10.28634,346.6036, 119.742,71.91859
sgpcmbeC1.c1,2002,0311:30:00,28 ,13.78553,389.4228,132.5487,77.85627
sgpcmbeC1.c1,2002,0312:30:00,27 ,19.82265,423.3986,141.8284, 80.0297
sgpcmbeC1.c1,2002,0313:30:00,26 ,13.51258, 403.049,137.4415,75.83181
sgpcmbeC1.c1,2002,0314:30:00,26 ,8.179675,341.1271,121.7775,65.57934
sgpcmbeC1.c1,2002,0315:30:00,27 ,8.387798,265.9061,97.38313,50.25656
sgpcmbeC1.c1,2002,0316:30:00,27 ,5.952044, 169.993,66.44865,35.45008
sgpcmbeC1.c1,2002,0317:30:00,27 ,2.346103,70.07303,33.47847,16.64149
sgpcmbeC1.c1,2002,0318:30:00,27 ,       0,14.02196,5.158359,3.999682
sgpcmbeC1.c1,2002,0319:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0320:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0321:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0322:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0323:30:00,20 ,       0,       0,       0,       0