datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,15 ,       0,31.14809,6.210727,9.389968
sgpcmbeC1.c1,2002,02 1:30:00,15 ,       0,27.40828,5.365099,8.523614
sgpcmbeC1.c1,2002,02 2:30:00,15 ,       0,24.78256,5.080267, 7.98026
sgpcmbeC1.c1,2002,02 3:30:00,15 ,       0,45.31211,9.663357,14.70225
sgpcmbeC1.c1,2002,02 4:30:00,15 ,       0,50.10993,7.716864,13.89036
sgpcmbeC1.c1,2002,02 5:30:00,15 ,       0, 60.1802,6.887506,15.61945
sgpcmbeC1.c1,2002,02 6:30:00,15 ,       0,67.54453,8.087984,18.61239
sgpcmbeC1.c1,2002,02 7:30:00,15 ,       0,63.59586,5.833346,16.48872
sgpcmbeC1.c1,2002,02 8:30:00,15 ,       0,62.74531,5.626255,16.13956
sgpcmbeC1.c1,2002,02 9:30:00,17 ,       0,63.54449,4.926642,15.21733
sgpcmbeC1.c1,2002,0210:30:00,18 ,       0, 60.2771,5.455502,14.13577
sgpcmbeC1.c1,2002,0211:30:00,17 ,       0,  27.523,5.221681,7.456457
sgpcmbeC1.c1,2002,0212:30:00,17 ,       0,31.72875,6.116501,8.080567
sgpcmbeC1.c1,2002,0213:30:00,17 ,       0,40.95823,7.720589,11.80643
sgpcmbeC1.c1,2002,0214:30:00,17 ,0.008883,36.69957,7.043894,9.911812
sgpcmbeC1.c1,2002,0215:30:00,15 ,       0,14.25555,4.831321,4.835279
sgpcmbeC1.c1,2002,0216:30:00,15 ,0.001541,56.31289,8.464609,14.02699
sgpcmbeC1.c1,2002,0217:30:00,15 ,0.034355,117.1912,12.81569,29.29479
sgpcmbeC1.c1,2002,0218:30:00,15 ,0.117924,79.88692,10.79952,19.76922
sgpcmbeC1.c1,2002,0219:30:00,15 ,0.007363,139.8838,14.09968,35.07745
sgpcmbeC1.c1,2002,0220:30:00,15 ,       0,327.1095,25.38812,83.56622
sgpcmbeC1.c1,2002,0221:30:00,15 ,       0,462.4785,33.66498,118.6914
sgpcmbeC1.c1,2002,0222:30:00,15 ,       0,72.57244,7.273227,18.51241
sgpcmbeC1.c1,2002,0223:30:00,15 ,       0,46.58718,5.816426,11.93699