datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 2:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 3:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 4:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 5:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 6:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 7:30:00,30 ,       0,19.36444,4.003316,4.602573
sgpcmbeC1.c1,2007,12 8:30:00,30 ,1.588202,153.6936,65.69869,50.10378
sgpcmbeC1.c1,2007,12 9:30:00,30 ,13.56175, 311.913,163.7759,111.9758
sgpcmbeC1.c1,2007,1210:30:00,30 ,19.34024,454.4696,250.7566,171.2227
sgpcmbeC1.c1,2007,1211:30:00,30 ,28.42909, 536.405,307.3214,210.4144
sgpcmbeC1.c1,2007,1212:30:00,30 ,25.43098,554.4218,322.5354,214.0797
sgpcmbeC1.c1,2007,1213:30:00,30 ,36.78796,523.4074,313.3282,199.9941
sgpcmbeC1.c1,2007,1214:30:00,30 ,23.33037, 426.107,253.5243,158.7288
sgpcmbeC1.c1,2007,1215:30:00,30 , 16.3322,281.9765,163.7462,97.05007
sgpcmbeC1.c1,2007,1216:30:00,30 ,5.175961,121.0589,62.48785,40.79716
sgpcmbeC1.c1,2007,1217:30:00,30 ,       0,8.262086,2.843825,2.461275
sgpcmbeC1.c1,2007,1218:30:00,28 ,       0,1.635671, 0.08488,0.316579
sgpcmbeC1.c1,2007,1219:30:00,26 ,       0,1.050638,0.046721, 0.20727
sgpcmbeC1.c1,2007,1220:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1221:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1222:30:00,19 ,       0,3.130276,0.164751,0.718135
sgpcmbeC1.c1,2007,1223:30:00,15 ,       0,       0,       0,       0