datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,12 0:30:00,31 ,       0,3.552811,1.270927,0.950064
sgpcmbeC1.c1,2004,12 1:30:00,31 ,       0,2.784646,1.250429,0.845145
sgpcmbeC1.c1,2004,12 2:30:00,31 ,       0,2.478396,0.980952,0.819521
sgpcmbeC1.c1,2004,12 3:30:00,31 ,       0,2.881675,1.183243,0.807007
sgpcmbeC1.c1,2004,12 4:30:00,31 ,       0, 2.75929,1.166236,0.737102
sgpcmbeC1.c1,2004,12 5:30:00,31 ,0.100631,2.149947,1.261741, 0.62923
sgpcmbeC1.c1,2004,12 6:30:00,31 ,0.335252,2.440983, 1.56941,0.505374
sgpcmbeC1.c1,2004,12 7:30:00,31 ,2.288299,24.31413,9.931712,5.207474
sgpcmbeC1.c1,2004,12 8:30:00,31 ,16.90689,172.1211,107.7793,40.56488
sgpcmbeC1.c1,2004,12 9:30:00,31 ,44.00291,346.7444,244.1794,79.98337
sgpcmbeC1.c1,2004,1210:30:00,31 ,40.32821,481.1486,361.4025,116.1834
sgpcmbeC1.c1,2004,1211:30:00,31 ,37.33333,561.2471,440.9311,134.3709
sgpcmbeC1.c1,2004,1212:30:00,31 ,44.42041,580.8741,461.2664,137.9673
sgpcmbeC1.c1,2004,1213:30:00,31 ,73.96659, 536.545, 444.403,125.7255
sgpcmbeC1.c1,2004,1214:30:00,31 ,12.33364,437.0061,353.1654,108.1939
sgpcmbeC1.c1,2004,1215:30:00,31 ,13.27001,288.4438,232.5553,63.54011
sgpcmbeC1.c1,2004,1216:30:00,31 ,18.36463,119.0682,90.45712,23.00197
sgpcmbeC1.c1,2004,1217:30:00,31 ,4.555198,10.33349,7.111727,1.589249
sgpcmbeC1.c1,2004,1218:30:00,31 ,0.844255,3.019455,2.308055,0.608438
sgpcmbeC1.c1,2004,1219:30:00,31 ,0.354385, 2.89894, 2.01592, 0.69775
sgpcmbeC1.c1,2004,1220:30:00,31 ,0.602753, 3.20653,1.966675, 0.75006
sgpcmbeC1.c1,2004,1221:30:00,31 ,       0,2.822685,1.629921,0.848479
sgpcmbeC1.c1,2004,1222:30:00,31 ,       0,2.917339,1.555827, 0.85609
sgpcmbeC1.c1,2004,1223:30:00,31 ,       0,2.814104,1.290158,0.800545