datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,08 0:30:00,31 ,       0,1.145793,0.095135,    0.27
sgpcmbeC1.c1,2004,08 1:30:00,31 ,       0,0.263815, 0.00851,0.047383
sgpcmbeC1.c1,2004,08 2:30:00,31 ,       0,0.261338,0.009836,0.047327
sgpcmbeC1.c1,2004,08 3:30:00,31 ,       0,0.420908,0.017545,0.078048
sgpcmbeC1.c1,2004,08 4:30:00,31 ,       0, 0.28553,0.009211,0.051283
sgpcmbeC1.c1,2004,08 5:30:00,31 ,       0,6.847391,2.268462,1.910957
sgpcmbeC1.c1,2004,08 6:30:00,31 ,7.923618,75.60204, 38.9398,12.92313
sgpcmbeC1.c1,2004,08 7:30:00,31 ,18.99918, 173.937, 97.5321,40.45146
sgpcmbeC1.c1,2004,08 8:30:00,31 ,36.24435,264.3855,148.7306,66.73759
sgpcmbeC1.c1,2004,08 9:30:00,31 , 71.4175,408.9912,199.8784,95.71349
sgpcmbeC1.c1,2004,0810:30:00,31 ,80.54099,482.6739,218.8596,117.1384
sgpcmbeC1.c1,2004,0811:30:00,31 ,72.11333,490.3337,232.4919, 129.877
sgpcmbeC1.c1,2004,0812:30:00,31 ,89.29301,532.8221,247.6679,142.3085
sgpcmbeC1.c1,2004,0813:30:00,31 ,90.47594,464.7749,242.4554,117.2347
sgpcmbeC1.c1,2004,0814:30:00,31 ,87.63784,424.0556,227.2345,96.46104
sgpcmbeC1.c1,2004,0815:30:00,31 ,80.86926,359.1149,199.9353,80.68209
sgpcmbeC1.c1,2004,0816:30:00,31 ,69.24904,245.6254, 156.454,54.68736
sgpcmbeC1.c1,2004,0817:30:00,31 , 38.8729,194.8695,107.2866,41.43244
sgpcmbeC1.c1,2004,0818:30:00,31 ,14.88733,87.74336,51.36788, 16.9066
sgpcmbeC1.c1,2004,0819:30:00,31 ,       0,12.62677,5.297269,3.784239
sgpcmbeC1.c1,2004,0820:30:00,31 ,       0, 0.17088,0.006954,0.031464
sgpcmbeC1.c1,2004,0821:30:00,31 ,       0, 0.42334,0.038202,0.111889
sgpcmbeC1.c1,2004,0822:30:00,31 ,       0,0.095428, 0.00675,0.022355
sgpcmbeC1.c1,2004,0823:30:00,31 ,       0,0.328523,0.010598,0.059005