datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,02 0:30:00,22 ,0.147987,168.1915,21.43592,46.94793
sgpcmbeC1.c1,2001,02 1:30:00,19 ,0.024865, 310.813,22.77256,70.42827
sgpcmbeC1.c1,2001,02 2:30:00,20 ,0.001852,294.4182,31.27209,71.24002
sgpcmbeC1.c1,2001,02 3:30:00,18 ,0.193927,82.81696,15.74479,  25.371
sgpcmbeC1.c1,2001,02 4:30:00,19 ,0.022599,276.0603, 40.8635,80.79526
sgpcmbeC1.c1,2001,02 5:30:00,19 ,0.055286,457.5075,46.51203,110.2007
sgpcmbeC1.c1,2001,02 6:30:00,18 ,0.073702,302.0774,30.96365,74.89749
sgpcmbeC1.c1,2001,02 7:30:00,19 ,       0,280.4062,38.89867,74.37316
sgpcmbeC1.c1,2001,02 8:30:00,18 ,       0,136.8605,20.71953,33.03312
sgpcmbeC1.c1,2001,02 9:30:00,21 ,0.025554,108.1678,13.50663,24.34577
sgpcmbeC1.c1,2001,0210:30:00,21 ,       0,142.4311,22.20047,39.60552
sgpcmbeC1.c1,2001,0211:30:00,22 ,       0,257.5919,34.32345,71.42509
sgpcmbeC1.c1,2001,0212:30:00,22 ,0.188509,187.8432, 31.8762,57.98095
sgpcmbeC1.c1,2001,0213:30:00,20 ,0.213586,232.1404,30.26999,60.12591
sgpcmbeC1.c1,2001,0214:30:00,22 ,0.384463,175.8708, 20.3654,40.77201
sgpcmbeC1.c1,2001,0215:30:00,23 ,0.540095,148.6628,23.64664,39.99939
sgpcmbeC1.c1,2001,0216:30:00,24 ,0.125434,167.3326,24.68344,47.20281
sgpcmbeC1.c1,2001,0217:30:00,24 ,0.227216,284.9883, 36.6687,77.35401
sgpcmbeC1.c1,2001,0218:30:00,21 , 0.28113,330.1846,26.34051,71.73912
sgpcmbeC1.c1,2001,0219:30:00,21 , 0.32194, 75.9133,13.83322,21.11675
sgpcmbeC1.c1,2001,0220:30:00,21 ,0.790511,179.3043,24.81741,51.54183
sgpcmbeC1.c1,2001,0221:30:00,21 ,0.167642,158.6737,16.93323,36.44138
sgpcmbeC1.c1,2001,0222:30:00,22 ,0.477678,107.8402,15.32411,25.40073
sgpcmbeC1.c1,2001,0223:30:00,21 ,0.283443,247.9228,24.07496,54.74678