datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,29 ,0.465706,3.177011,1.127788,0.625525
sgpcmbeC1.c1,2006,12 1:30:00,29 ,0.480444,3.197223,1.117441,0.604158
sgpcmbeC1.c1,2006,12 2:30:00,28 ,0.484473,2.985212,1.128426,0.594285
sgpcmbeC1.c1,2006,12 3:30:00,28 ,0.517914,2.936482,1.149875,0.591038
sgpcmbeC1.c1,2006,12 4:30:00,28 ,0.552999,3.863356,1.222907,  0.7637
sgpcmbeC1.c1,2006,12 5:30:00,29 , 0.55338, 4.11409,1.286819,0.840882
sgpcmbeC1.c1,2006,12 6:30:00,29 ,0.536218,4.255885,1.277086,0.864918
sgpcmbeC1.c1,2006,12 7:30:00,28 ,0.514335,4.607742,1.205856,0.845598
sgpcmbeC1.c1,2006,12 8:30:00,28 ,0.383985,4.856184,1.235925,0.921502
sgpcmbeC1.c1,2006,12 9:30:00,28 ,0.153457,4.795508, 1.34133,1.093771
sgpcmbeC1.c1,2006,1210:30:00,29 , 0.13047,3.964047,1.226821,0.873674
sgpcmbeC1.c1,2006,1211:30:00,30 ,0.139231,2.717722,1.136044,0.686365
sgpcmbeC1.c1,2006,1212:30:00,30 ,0.150348,2.707818,1.118151,0.621935
sgpcmbeC1.c1,2006,1213:30:00,31 , 0.16003,2.793527,1.082871,0.601839
sgpcmbeC1.c1,2006,1214:30:00,31 ,0.167917,2.822471, 1.05737,0.594838
sgpcmbeC1.c1,2006,1215:30:00,31 ,0.170809,2.927022,1.057828,0.596315
sgpcmbeC1.c1,2006,1216:30:00,31 , 0.17089,3.155659,1.087248,0.642627
sgpcmbeC1.c1,2006,1217:30:00,31 ,0.178525,3.174917,1.123534,0.681578
sgpcmbeC1.c1,2006,1218:30:00,31 ,0.172759,3.097556,1.117843,0.674781
sgpcmbeC1.c1,2006,1219:30:00,31 ,0.196273,3.449963,1.144267,0.715929
sgpcmbeC1.c1,2006,1220:30:00,30 ,0.292643,3.091091,1.088095,0.588879
sgpcmbeC1.c1,2006,1221:30:00,29 ,0.368201,2.350456, 1.03626,0.479681
sgpcmbeC1.c1,2006,1222:30:00,29 ,0.423696,3.619996, 1.07379,0.630999
sgpcmbeC1.c1,2006,1223:30:00,30 ,0.408449,3.895299,1.140613,0.757806