datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 1:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 4:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 7:30:00,23 ,0.767606,49.43658, 16.3711,15.68829
sgpcmbeC1.c1,1998,02 8:30:00,22 ,17.27149,234.3219,109.8832,71.94453
sgpcmbeC1.c1,1998,02 9:30:00,22 ,47.83831,440.4811,217.8138, 135.855
sgpcmbeC1.c1,1998,0210:30:00,22 , 71.5561,600.3307,337.9025,177.9948
sgpcmbeC1.c1,1998,0211:30:00,23 ,104.1821,723.6385,417.6369,212.0854
sgpcmbeC1.c1,1998,0212:30:00,23 ,69.17181,772.1989,485.9008,223.1266
sgpcmbeC1.c1,1998,0213:30:00,22 ,80.38534,751.8511,497.4268,232.0172
sgpcmbeC1.c1,1998,0214:30:00,22 ,83.01686,671.2177,450.3888,189.1685
sgpcmbeC1.c1,1998,0215:30:00,23 , 62.4953,523.4923,315.6931, 135.322
sgpcmbeC1.c1,1998,0216:30:00,23 ,24.91055,351.4249, 187.671,95.72048
sgpcmbeC1.c1,1998,0217:30:00,22 ,7.447451, 136.787,67.58536,39.21232
sgpcmbeC1.c1,1998,0218:30:00,23 ,       0,9.964703, 2.35929,2.799057
sgpcmbeC1.c1,1998,0219:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0220:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0221:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0222:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0223:30:00,25 ,       0,       0,       0,       0