datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,30 ,       0,1.053305, 0.10792, 0.27287
sgpcmbeC1.c1,2003,12 1:30:00,29 ,       0,0.752292,0.038862,0.153826
sgpcmbeC1.c1,2003,12 2:30:00,31 ,       0,0.677447, 0.05114,0.158818
sgpcmbeC1.c1,2003,12 3:30:00,31 ,       0,   0.692,0.033789,0.137818
sgpcmbeC1.c1,2003,12 4:30:00,31 ,       0,0.405702,0.029943,0.093878
sgpcmbeC1.c1,2003,12 5:30:00,30 ,       0,1.124674,0.037489,0.205336
sgpcmbeC1.c1,2003,12 6:30:00,30 ,       0,1.970052,0.081284, 0.36683
sgpcmbeC1.c1,2003,12 7:30:00,31 ,       0,17.05172,6.395062,4.537301
sgpcmbeC1.c1,2003,12 8:30:00,31 ,15.89155,151.1224,93.15982,38.67778
sgpcmbeC1.c1,2003,12 9:30:00,31 ,28.55182,317.9108,227.2365,87.44916
sgpcmbeC1.c1,2003,1210:30:00,31 ,51.38048,449.4418,328.4679, 135.472
sgpcmbeC1.c1,2003,1211:30:00,31 ,27.29791,529.7245,382.9766,160.4934
sgpcmbeC1.c1,2003,1212:30:00,31 ,31.42764,572.8676, 411.244,177.6118
sgpcmbeC1.c1,2003,1213:30:00,31 ,19.57042,512.7773,372.3033,163.7941
sgpcmbeC1.c1,2003,1214:30:00,31 ,27.48571,428.0488,310.6096,135.6304
sgpcmbeC1.c1,2003,1215:30:00,31 ,19.85806,310.2191,205.2364,  89.429
sgpcmbeC1.c1,2003,1216:30:00,31 , 2.28814,120.8584,72.73499, 33.1333
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,6.868681,2.472811,1.716358
sgpcmbeC1.c1,2003,1218:30:00,30 ,       0,0.205442,0.008519,0.038301
sgpcmbeC1.c1,2003,1219:30:00,29 ,       0,0.589588,0.040841,  0.1405
sgpcmbeC1.c1,2003,1220:30:00,29 ,       0,2.153967,0.102825,0.405705
sgpcmbeC1.c1,2003,1221:30:00,28 ,       0,0.679731,0.044685,0.148518
sgpcmbeC1.c1,2003,1222:30:00,28 ,       0,2.095731,0.102438,0.417003
sgpcmbeC1.c1,2003,1223:30:00,29 ,       0,   0.531,0.023648,0.098874