datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,0.286431,2.604192,  1.1076,0.646524
sgpcmbeC1.c1,2004,02 1:30:00,26 ,0.297719,2.198838,1.075505,0.589992
sgpcmbeC1.c1,2004,02 2:30:00,26 ,0.299646,2.170942,1.053224,0.563911
sgpcmbeC1.c1,2004,02 3:30:00,26 ,0.298109,2.272953, 1.04844,0.584407
sgpcmbeC1.c1,2004,02 4:30:00,26 ,0.283255,2.393406,1.057486,0.583188
sgpcmbeC1.c1,2004,02 5:30:00,26 ,0.254584,2.454423,1.065674,0.590441
sgpcmbeC1.c1,2004,02 6:30:00,26 , 0.22529,2.583613,1.074841,0.600934
sgpcmbeC1.c1,2004,02 7:30:00,26 ,0.197667,2.423096,1.066137,0.586317
sgpcmbeC1.c1,2004,02 8:30:00,26 ,0.190311,2.655313,1.060754,0.606936
sgpcmbeC1.c1,2004,02 9:30:00,27 ,0.177335,2.731407,1.041461,0.605724
sgpcmbeC1.c1,2004,0210:30:00,27 ,0.177704,2.344434,  1.0419,0.578226
sgpcmbeC1.c1,2004,0211:30:00,27 ,0.175371,2.526829,1.081879,0.614341
sgpcmbeC1.c1,2004,0212:30:00,27 ,0.178565,3.110103,1.101504,0.651365
sgpcmbeC1.c1,2004,0213:30:00,27 ,0.194112, 3.52444,1.097549,0.678366
sgpcmbeC1.c1,2004,0214:30:00,27 ,0.208696,3.290969, 1.12148,0.678901
sgpcmbeC1.c1,2004,0215:30:00,26 ,0.202148,2.924516,1.059225,0.577298
sgpcmbeC1.c1,2004,0216:30:00,26 ,0.206021,2.313023,1.034348,0.510768
sgpcmbeC1.c1,2004,0217:30:00,27 ,0.237599,2.397327,1.074768,0.580443
sgpcmbeC1.c1,2004,0218:30:00,26 ,0.272012,2.239957,1.053796,0.577951
sgpcmbeC1.c1,2004,0219:30:00,26 ,0.288801,2.166833,1.016309,0.532359
sgpcmbeC1.c1,2004,0220:30:00,26 ,0.306699,2.143259,1.006098,0.535006
sgpcmbeC1.c1,2004,0221:30:00,26 ,0.301117,  2.2015,1.033862,0.564985
sgpcmbeC1.c1,2004,0222:30:00,26 ,0.290908,2.333092,1.060599,0.592171
sgpcmbeC1.c1,2004,0223:30:00,26 ,0.282282, 2.60103,1.083594,0.640137