datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,16 ,       0,188.2603,23.84857,63.04621
sgpcmbeC1.c1,2002,03 1:30:00,16 ,       0,226.0257, 21.6328,60.79015
sgpcmbeC1.c1,2002,03 2:30:00,16 ,       0,196.9849,21.62136,58.09421
sgpcmbeC1.c1,2002,03 3:30:00,15 ,0.022183,  125.45,16.14992,40.01437
sgpcmbeC1.c1,2002,03 4:30:00,15 ,0.004967,149.9785,18.24656,43.68045
sgpcmbeC1.c1,2002,03 5:30:00,14 ,       0,165.7664,20.24641,50.31407
sgpcmbeC1.c1,2002,03 6:30:00,14 ,       0,189.6321,24.30871,58.94297
sgpcmbeC1.c1,2002,03 7:30:00,14 ,       0,264.3958,30.16002,78.29345
sgpcmbeC1.c1,2002,03 8:30:00,13 ,       0,297.9704,23.67682,82.43141
sgpcmbeC1.c1,2002,03 9:30:00,17 ,       0, 290.516, 28.5107,79.81061
sgpcmbeC1.c1,2002,0310:30:00,19 ,       0,262.5999,37.83785,85.77189
sgpcmbeC1.c1,2002,0311:30:00,19 ,       0,422.0504,44.14067,108.6715
sgpcmbeC1.c1,2002,0312:30:00,19 ,       0,340.2825,33.19521,84.95751
sgpcmbeC1.c1,2002,0313:30:00,20 ,       0,329.5605,30.60111,79.24939
sgpcmbeC1.c1,2002,0314:30:00,20 ,       0,469.6804,41.12585,110.4524
sgpcmbeC1.c1,2002,0315:30:00,20 ,0.000716,354.8279, 37.7831,91.86991
sgpcmbeC1.c1,2002,0316:30:00,21 ,       0,194.3975,29.80092,65.94337
sgpcmbeC1.c1,2002,0317:30:00,21 ,0.017219,221.6753,29.95332,69.21074
sgpcmbeC1.c1,2002,0318:30:00,19 ,0.300045,416.1059,31.76999, 96.7336
sgpcmbeC1.c1,2002,0319:30:00,19 ,0.185324,460.8947,38.56435,112.1885
sgpcmbeC1.c1,2002,0320:30:00,19 ,0.001987,1421.103,84.59665,324.8582
sgpcmbeC1.c1,2002,0321:30:00,19 ,       0, 991.391,63.52648,226.6611
sgpcmbeC1.c1,2002,0322:30:00,17 ,       0,196.1758, 21.4265,58.29786
sgpcmbeC1.c1,2002,0323:30:00,17 ,       0,221.9576,23.41039,64.77611