datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,04 0:30:00,30 ,       0, 0.04001,0.001334,0.007305
sgpcmbeC1.c1,1997,04 1:30:00,30 ,       0,0.008088, 0.00027,0.001477
sgpcmbeC1.c1,1997,04 2:30:00,30 ,       0,0.080122,0.003442, 0.01493
sgpcmbeC1.c1,1997,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 5:30:00,30 ,       0, 1.72213,0.223194,0.455878
sgpcmbeC1.c1,1997,04 6:30:00,30 ,0.102733,38.12761,12.98901, 11.5432
sgpcmbeC1.c1,1997,04 7:30:00,30 ,1.065807, 86.9597,42.14026,29.04651
sgpcmbeC1.c1,1997,04 8:30:00,30 ,5.313369,123.9198,71.83381,42.41539
sgpcmbeC1.c1,1997,04 9:30:00,30 ,5.065359,154.3332,95.25194,53.82521
sgpcmbeC1.c1,1997,0410:30:00,30 , 16.0161,179.5167, 111.989,60.82721
sgpcmbeC1.c1,1997,0411:30:00,30 ,9.762537,195.0992, 127.024,65.07175
sgpcmbeC1.c1,1997,0412:30:00,30 ,4.767015, 201.624,131.1258,68.16186
sgpcmbeC1.c1,1997,0413:30:00,30 , 19.5964,198.9973,134.2449,62.70331
sgpcmbeC1.c1,1997,0414:30:00,30 ,7.541216, 182.133,117.3129,62.71714
sgpcmbeC1.c1,1997,0415:30:00,30 ,8.381977,173.8887,100.7008,59.71533
sgpcmbeC1.c1,1997,0416:30:00,30 , 2.90887, 128.597,74.24102,47.89957
sgpcmbeC1.c1,1997,0417:30:00,30 ,2.964256, 86.5305,45.58798,30.46988
sgpcmbeC1.c1,1997,0418:30:00,30 ,0.179981,33.55025,14.43363,10.81281
sgpcmbeC1.c1,1997,0419:30:00,30 ,       0, 0.78739,0.071743,0.184395
sgpcmbeC1.c1,1997,0420:30:00,30 ,       0,0.131994,0.006233,0.025785
sgpcmbeC1.c1,1997,0421:30:00,30 ,       0,0.222819,0.007427,0.040681
sgpcmbeC1.c1,1997,0422:30:00,30 ,       0,0.001128,0.000038,0.000206
sgpcmbeC1.c1,1997,0423:30:00,30 ,       0,0.017533,0.000584,0.003201