datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,0.659792,0.046351,0.164543
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0,0.635554,0.025422,0.127111
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       0,0.938768,0.065876,0.233882
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,1.528471, 0.05661,0.294154
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,0.451318,0.016715,0.086856
sgpcmbeC1.c1,2007,03 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,25.68585,4.696661,5.581889
sgpcmbeC1.c1,2007,03 7:30:00,27 ,4.557766,100.6716,35.60419,22.13366
sgpcmbeC1.c1,2007,03 8:30:00,26 ,4.092241,122.6624,55.34078, 31.6484
sgpcmbeC1.c1,2007,03 9:30:00,28 ,3.462042, 152.388,65.01112,30.72012
sgpcmbeC1.c1,2007,0310:30:00,28 ,7.983695,189.3927,76.88422, 54.3665
sgpcmbeC1.c1,2007,0311:30:00,28 ,4.304608,177.3451,60.46708,48.69275
sgpcmbeC1.c1,2007,0312:30:00,28 ,3.544523,274.9539, 69.6513,79.00119
sgpcmbeC1.c1,2007,0313:30:00,28 ,3.855625,294.8582,67.96441,67.85442
sgpcmbeC1.c1,2007,0314:30:00,28 ,5.481646,255.2627, 83.6143,66.80527
sgpcmbeC1.c1,2007,0315:30:00,29 ,1.379377, 237.646,89.61729,62.76991
sgpcmbeC1.c1,2007,0316:30:00,29 ,2.692616,109.1973,60.92668,28.91604
sgpcmbeC1.c1,2007,0317:30:00,29 ,2.356564,91.94518, 49.9767,22.09787
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,37.24979,16.02157,7.822912
sgpcmbeC1.c1,2007,0319:30:00,29 ,       0,1.676695,0.108968,0.397578
sgpcmbeC1.c1,2007,0320:30:00,29 ,       0,1.598613,0.154208,0.464415
sgpcmbeC1.c1,2007,0321:30:00,27 ,       0,1.579066,0.128328,0.403453
sgpcmbeC1.c1,2007,0322:30:00,27 ,       0,1.523228,0.120636,0.380205
sgpcmbeC1.c1,2007,0323:30:00,27 ,       0,1.631261,0.126601, 0.41048