datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,12 0:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 1:30:00,26 ,       0,0.059753,0.002298,0.011719
sgpcmbeC1.c1,2002,12 2:30:00,25 ,       0,1.524316,0.068977,0.305821
sgpcmbeC1.c1,2002,12 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 6:30:00,31 ,       0,0.104294,0.003364,0.018732
sgpcmbeC1.c1,2002,12 7:30:00,31 ,       0, 10.4536,1.282236,2.530531
sgpcmbeC1.c1,2002,12 8:30:00,31 ,       0,123.6802,32.57511,40.94088
sgpcmbeC1.c1,2002,12 9:30:00,28 , 0.07629,276.5072,104.6071,108.7569
sgpcmbeC1.c1,2002,1210:30:00,27 ,0.092701,403.7704,175.3216,176.3252
sgpcmbeC1.c1,2002,1211:30:00,27 ,0.080177,480.0335,201.7514,207.9489
sgpcmbeC1.c1,2002,1212:30:00,27 ,0.012119,506.5007,219.1342,220.0015
sgpcmbeC1.c1,2002,1213:30:00,28 ,0.009541,474.6201,178.3265, 197.659
sgpcmbeC1.c1,2002,1214:30:00,28 ,0.001312,380.8316,142.8553,162.3784
sgpcmbeC1.c1,2002,1215:30:00,30 ,0.000238,247.8641,80.63404,97.49507
sgpcmbeC1.c1,2002,1216:30:00,31 ,       0,98.10504,23.16986, 31.6425
sgpcmbeC1.c1,2002,1217:30:00,31 ,       0,4.568641, 0.92191,1.182932
sgpcmbeC1.c1,2002,1218:30:00,31 ,       0,1.569593,0.112769,0.375437
sgpcmbeC1.c1,2002,1219:30:00,31 ,       0, 0.42444,0.013692,0.076232
sgpcmbeC1.c1,2002,1220:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1221:30:00,29 ,       0,1.703227,0.102565,0.375882
sgpcmbeC1.c1,2002,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1223:30:00,27 ,       0,       0,       0,       0