datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,04 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 5:30:00,30 ,       0,4.228549,0.840824,1.223961
sgpcmbeC1.c1,2003,04 6:30:00,30 ,4.200706,109.2179,54.33682,31.94531
sgpcmbeC1.c1,2003,04 7:30:00,30 , 28.1299,308.2845,214.4609,86.18144
sgpcmbeC1.c1,2003,04 8:30:00,30 , 57.3479,530.5154,392.6589,142.5443
sgpcmbeC1.c1,2003,04 9:30:00,30 ,81.69039,721.9035,553.3467,202.8608
sgpcmbeC1.c1,2003,0410:30:00,30 ,45.82991,872.2638,658.6665,262.2139
sgpcmbeC1.c1,2003,0411:30:00,30 ,20.83848,967.0557,739.4039,295.4013
sgpcmbeC1.c1,2003,0412:30:00,30 ,50.03011,996.9633,735.2867,     289
sgpcmbeC1.c1,2003,0413:30:00,30 ,79.31823,961.2061,751.7615,246.4569
sgpcmbeC1.c1,2003,0414:30:00,30 ,56.30321,861.5583,650.6734,221.0281
sgpcmbeC1.c1,2003,0415:30:00,30 ,66.49312,706.9819,560.1165,167.4576
sgpcmbeC1.c1,2003,0416:30:00,30 ,65.49079,522.3011, 416.217,107.7207
sgpcmbeC1.c1,2003,0417:30:00,30 ,19.12305,338.8533,229.3225,66.67486
sgpcmbeC1.c1,2003,0418:30:00,30 ,8.817722,95.72549,55.86477,21.30409
sgpcmbeC1.c1,2003,0419:30:00,30 ,       0,3.992215,0.954572, 1.06022
sgpcmbeC1.c1,2003,0420:30:00,30 ,       0,1.988676,0.086931,0.368543
sgpcmbeC1.c1,2003,0421:30:00,30 ,       0,1.601291, 0.11321,0.357236
sgpcmbeC1.c1,2003,0422:30:00,30 ,       0, 0.26299,0.011231,0.049427
sgpcmbeC1.c1,2003,0423:30:00,29 ,       0,       0,       0,       0