datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,02 0:30:00,15 ,       0, 2.45015,0.318738,0.841449
sgpcmbeC1.c1,2001,02 1:30:00,15 ,       0,2.505373,0.301081,0.800029
sgpcmbeC1.c1,2001,02 2:30:00,15 ,       0,2.302021,0.265553,0.710518
sgpcmbeC1.c1,2001,02 3:30:00,15 ,       0,2.174679,0.144979,  0.5615
sgpcmbeC1.c1,2001,02 4:30:00,18 ,       0,2.249459, 0.12497,0.530203
sgpcmbeC1.c1,2001,02 5:30:00,22 ,       0,2.370359,0.107744,0.505362
sgpcmbeC1.c1,2001,02 6:30:00,28 ,       0, 2.14155,0.076541,0.404704
sgpcmbeC1.c1,2001,02 7:30:00,28 ,0.126555,17.02018,2.915228,4.896013
sgpcmbeC1.c1,2001,02 8:30:00,27 ,0.003197, 150.103,35.96896,51.20902
sgpcmbeC1.c1,2001,02 9:30:00,28 ,0.092747, 319.753,83.74277,117.8438
sgpcmbeC1.c1,2001,0210:30:00,28 , 0.12146,469.9895,143.6057,184.6407
sgpcmbeC1.c1,2001,0211:30:00,28 ,0.011528,565.9993, 184.019, 230.669
sgpcmbeC1.c1,2001,0212:30:00,28 ,0.002663, 642.201,177.8383,249.3869
sgpcmbeC1.c1,2001,0213:30:00,28 ,0.000206,628.0142,192.3801,250.2459
sgpcmbeC1.c1,2001,0214:30:00,28 ,0.018852,548.4564,192.2173,213.9726
sgpcmbeC1.c1,2001,0215:30:00,26 ,0.031799,413.9342,139.4938,160.7417
sgpcmbeC1.c1,2001,0216:30:00,27 ,       0,244.8265,79.61878,87.99202
sgpcmbeC1.c1,2001,0217:30:00,28 ,       0,70.08014,15.88358,20.48325
sgpcmbeC1.c1,2001,0218:30:00,28 ,0.003831,2.059065,0.497916,0.434735
sgpcmbeC1.c1,2001,0219:30:00,27 ,       0,2.636683,0.282832,0.694981
sgpcmbeC1.c1,2001,0220:30:00,24 ,       0, 2.39111,0.225984,0.631161
sgpcmbeC1.c1,2001,0221:30:00,18 ,       0,2.428776,0.316589,0.766926
sgpcmbeC1.c1,2001,0222:30:00,19 ,       0,2.176216,0.318068,0.758475
sgpcmbeC1.c1,2001,0223:30:00,19 ,       0, 2.39453,0.328892,0.769567