datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,29 ,       0,0.345397,0.030182,0.081336
sgpcmbeC1.c1,2006,12 1:30:00,25 ,       0,1.802993,0.192878,0.428814
sgpcmbeC1.c1,2006,12 2:30:00,28 ,       0,0.994267,0.173372,0.340893
sgpcmbeC1.c1,2006,12 3:30:00,27 ,       0,1.301965,0.134436,0.317879
sgpcmbeC1.c1,2006,12 4:30:00,26 ,       0,1.050243,0.093207, 0.25439
sgpcmbeC1.c1,2006,12 5:30:00,27 ,       0,1.321837,0.155677,0.338215
sgpcmbeC1.c1,2006,12 6:30:00,30 ,       0,1.373375,0.098557,0.285402
sgpcmbeC1.c1,2006,12 7:30:00,31 ,       0,15.95771,  2.7963,4.450811
sgpcmbeC1.c1,2006,12 8:30:00,28 ,2.889064,130.0989,33.41008,36.46397
sgpcmbeC1.c1,2006,12 9:30:00,29 ,5.416389,278.2684,68.82017,76.74175
sgpcmbeC1.c1,2006,1210:30:00,28 ,4.807796,435.4375,98.31949,111.1207
sgpcmbeC1.c1,2006,1211:30:00,29 ,10.68134,492.0956,117.9955,120.0458
sgpcmbeC1.c1,2006,1212:30:00,29 ,13.26073,515.6384,125.6859,121.5803
sgpcmbeC1.c1,2006,1213:30:00,29 ,11.33453,474.3056,114.3593,105.9575
sgpcmbeC1.c1,2006,1214:30:00,28 , 12.7857,373.1177,98.33464,85.83575
sgpcmbeC1.c1,2006,1215:30:00,25 ,11.67807,261.3946,72.94708,59.22885
sgpcmbeC1.c1,2006,1216:30:00,24 ,3.485235, 97.7376,33.52068,22.79684
sgpcmbeC1.c1,2006,1217:30:00,31 ,       0,5.372613,1.628711,1.760623
sgpcmbeC1.c1,2006,1218:30:00,31 ,       0,1.698419,0.054788,0.305045
sgpcmbeC1.c1,2006,1219:30:00,29 , -0.0339,1.484456,0.059331,0.278383
sgpcmbeC1.c1,2006,1220:30:00,29 ,       0,1.751552,0.246543,0.536719
sgpcmbeC1.c1,2006,1221:30:00,27 ,       0, 1.51566,0.189491,0.416108
sgpcmbeC1.c1,2006,1222:30:00,28 ,-0.14286,1.316203,0.139388,0.361932
sgpcmbeC1.c1,2006,1223:30:00,29 ,       0,2.031947,0.191238,0.515567