datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,       0, 1.75057,0.096437,0.368533
sgpcmbeC1.c1,2004,02 1:30:00,26 ,       0,3.134975,0.120576,0.614819
sgpcmbeC1.c1,2004,02 2:30:00,26 ,       0,0.152566,0.005868,0.029921
sgpcmbeC1.c1,2004,02 3:30:00,27 ,       0,0.154116,0.005708, 0.02966
sgpcmbeC1.c1,2004,02 4:30:00,25 ,       0,0.461222,0.018449,0.092244
sgpcmbeC1.c1,2004,02 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,0.309862,0.010685, 0.05754
sgpcmbeC1.c1,2004,02 7:30:00,29 ,       0,52.32316,16.39017,12.99218
sgpcmbeC1.c1,2004,02 8:30:00,29 ,8.656431,243.9544, 123.178,71.00221
sgpcmbeC1.c1,2004,02 9:30:00,29 ,16.11326,450.0248,254.1206,132.5641
sgpcmbeC1.c1,2004,0210:30:00,29 ,46.87319,619.4414, 397.816, 182.617
sgpcmbeC1.c1,2004,0211:30:00,29 ,59.50296,728.1504,482.7532,218.0579
sgpcmbeC1.c1,2004,0212:30:00,29 ,65.98156,785.1805,533.3861,220.5322
sgpcmbeC1.c1,2004,0213:30:00,29 ,46.65536,761.9437,557.5445,193.5031
sgpcmbeC1.c1,2004,0214:30:00,29 , 24.8286,674.8885,466.2591,172.8217
sgpcmbeC1.c1,2004,0215:30:00,29 ,15.94342,529.4546,354.1981,132.5139
sgpcmbeC1.c1,2004,0216:30:00,29 ,1.699861,341.7776,213.8663,88.38384
sgpcmbeC1.c1,2004,0217:30:00,29 ,       0,126.9881,65.40862,33.54884
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,7.108723,1.260576, 1.63124
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,0.770161,0.041631,0.161906
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,1.042011,0.035931,0.193497
sgpcmbeC1.c1,2004,0221:30:00,28 ,       0,0.515687,0.018417,0.097456
sgpcmbeC1.c1,2004,0222:30:00,27 ,       0,1.199065,0.087546,0.271502
sgpcmbeC1.c1,2004,0223:30:00,27 ,       0,0.427527,0.029055,0.095146