datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,30 ,       0,1497.546,89.72928,285.1349
sgpcmbeC1.c1,2006,12 1:30:00,30 ,       0,2190.932,102.3086, 400.497
sgpcmbeC1.c1,2006,12 2:30:00,29 ,       0,2864.348, 135.133,535.0405
sgpcmbeC1.c1,2006,12 3:30:00,29 ,       0,3556.091, 163.171,664.7275
sgpcmbeC1.c1,2006,12 4:30:00,29 ,       0,2959.024,165.5137,582.1099
sgpcmbeC1.c1,2006,12 5:30:00,29 ,       0,1001.888,77.74324,201.3534
sgpcmbeC1.c1,2006,12 6:30:00,29 ,       0, 2264.57,149.2889,480.8081
sgpcmbeC1.c1,2006,12 7:30:00,29 ,       0,2395.344,191.1565,548.1357
sgpcmbeC1.c1,2006,12 8:30:00,29 ,       0,2859.199, 255.608,709.2722
sgpcmbeC1.c1,2006,12 9:30:00,29 ,       0,2525.062, 213.395,574.9395
sgpcmbeC1.c1,2006,1210:30:00,30 ,       0,3057.469,165.2798, 568.516
sgpcmbeC1.c1,2006,1211:30:00,30 ,       0, 1172.55,86.44938,229.1921
sgpcmbeC1.c1,2006,1212:30:00,30 ,       0,293.2672,51.13255,85.85424
sgpcmbeC1.c1,2006,1213:30:00,31 ,       0,238.7406,38.70554,64.58025
sgpcmbeC1.c1,2006,1214:30:00,31 ,       0, 288.803,29.80057,60.27036
sgpcmbeC1.c1,2006,1215:30:00,31 ,       0, 314.086,32.82822,67.15133
sgpcmbeC1.c1,2006,1216:30:00,31 ,       0,268.1036,35.36851,65.53985
sgpcmbeC1.c1,2006,1217:30:00,31 ,       0, 402.079,45.90022,92.66444
sgpcmbeC1.c1,2006,1218:30:00,31 ,       0,515.1782,51.02783,118.9448
sgpcmbeC1.c1,2006,1219:30:00,31 ,       0,1643.793,128.1411,380.6252
sgpcmbeC1.c1,2006,1220:30:00,31 ,       0,3422.227,200.9738,676.6405
sgpcmbeC1.c1,2006,1221:30:00,31 ,       0,4430.673,291.9046,1014.733
sgpcmbeC1.c1,2006,1222:30:00,31 ,       0,3477.135,277.4928,855.6771
sgpcmbeC1.c1,2006,1223:30:00,31 ,       0,3054.941,213.4273,662.3465