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 ,       0,9.620499,2.135707, 2.51162
sgpcmbeC1.c1,2003,12 8:30:00,31 ,0.000233,119.8917,51.56809, 41.4474
sgpcmbeC1.c1,2003,12 9:30:00,31 , 0.00036,  274.09,145.0496,102.2101
sgpcmbeC1.c1,2003,1210:30:00,31 ,0.043118,396.9207,221.5904,159.9772
sgpcmbeC1.c1,2003,1211:30:00,31 ,0.064156,469.9794,256.0921,189.6564
sgpcmbeC1.c1,2003,1212:30:00,30 ,0.064087,490.3858,290.5244,197.9749
sgpcmbeC1.c1,2003,1213:30:00,31 , 0.10179,458.8379,249.9612,184.7993
sgpcmbeC1.c1,2003,1214:30:00,31 ,0.026482,373.3099,209.2252,  155.14
sgpcmbeC1.c1,2003,1215:30:00,31 ,       0, 240.948,133.9668,88.40229
sgpcmbeC1.c1,2003,1216:30:00,31 ,       0,90.10363,39.55097,28.56101
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,3.080994, 0.78107, 0.85498
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