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 ,0.126555,39.83439,12.40898, 10.5241
sgpcmbeC1.c1,2001,02 8:30:00,28 ,8.310174,245.2508, 91.5794,69.57434
sgpcmbeC1.c1,2001,02 9:30:00,28 ,29.92452,419.3063,191.9356,134.1371
sgpcmbeC1.c1,2001,0210:30:00,28 ,13.40943,554.7048,299.2368,182.6047
sgpcmbeC1.c1,2001,0211:30:00,28 ,18.90863,655.9648,358.5629,225.1817
sgpcmbeC1.c1,2001,0212:30:00,28 ,39.06391,725.3156,372.9663,239.6005
sgpcmbeC1.c1,2001,0213:30:00,28 ,11.58175,709.5256, 376.494,246.1089
sgpcmbeC1.c1,2001,0214:30:00,28 ,17.37366,639.6908,357.3147,224.4244
sgpcmbeC1.c1,2001,0215:30:00,28 ,19.42145,518.2156,275.9234,172.1949
sgpcmbeC1.c1,2001,0216:30:00,28 ,13.38078, 328.129,166.0308,106.7605
sgpcmbeC1.c1,2001,0217:30:00,28 ,5.550239,119.7839,50.12664, 34.1614
sgpcmbeC1.c1,2001,0218:30:00,28 ,0.003831,6.617737,1.539497,1.802712
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