datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 3:30:00,19 ,       0,0.215185,0.011326,0.049367
sgpcmbeC1.c1,2007,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 6:30:00,26 ,       0,0.997236,0.074823,0.264419
sgpcmbeC1.c1,2007,02 7:30:00,28 ,1.261362,56.70975,22.69762,17.28649
sgpcmbeC1.c1,2007,02 8:30:00,28 ,13.53122,250.0617,143.1471,  79.405
sgpcmbeC1.c1,2007,02 9:30:00,28 ,18.39731,450.5234,294.8565,135.0049
sgpcmbeC1.c1,2007,0210:30:00,28 ,21.67117,621.8367,419.8777,189.4367
sgpcmbeC1.c1,2007,0211:30:00,28 ,106.0675,  744.93,526.9452,219.0907
sgpcmbeC1.c1,2007,0212:30:00,28 ,137.4781,790.7294,566.4072,230.1389
sgpcmbeC1.c1,2007,0213:30:00,28 ,69.37314,763.9289,555.6484,216.9917
sgpcmbeC1.c1,2007,0214:30:00,28 , 80.2207,672.7353,465.7155,193.3332
sgpcmbeC1.c1,2007,0215:30:00,28 ,72.75005,514.6184,339.2129,141.5421
sgpcmbeC1.c1,2007,0216:30:00,28 ,40.46508,329.2134,197.7744,90.83622
sgpcmbeC1.c1,2007,0217:30:00,28 ,7.135776,130.6767,59.38137,37.72097
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,6.261298,1.488926,1.922257
sgpcmbeC1.c1,2007,0219:30:00,23 ,       0,1.540532,0.092463,0.338454
sgpcmbeC1.c1,2007,0220:30:00,22 ,       0,3.372671,0.185153,0.721776
sgpcmbeC1.c1,2007,0221:30:00,20 ,       0,3.442216,0.190173,0.767542
sgpcmbeC1.c1,2007,0222:30:00,23 ,       0,3.616639,0.157245,0.754121
sgpcmbeC1.c1,2007,0223:30:00,21 ,       0,3.344395,0.159257,0.729807