datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,03 0:30:00,31 ,0.549148,18.54925,3.870063,4.230325
sgpcmbeC1.c1,2005,03 1:30:00,31 ,0.471577,19.90338,4.586838,4.791582
sgpcmbeC1.c1,2005,03 2:30:00,31 , 0.47637,15.15517,3.883493,3.813116
sgpcmbeC1.c1,2005,03 3:30:00,31 ,0.515293, 28.6452,4.887472,7.503957
sgpcmbeC1.c1,2005,03 4:30:00,31 ,0.378023,25.09999,5.527925,6.672982
sgpcmbeC1.c1,2005,03 5:30:00,31 , 0.48779,17.99452,4.248922,4.788008
sgpcmbeC1.c1,2005,03 6:30:00,31 ,0.454382,20.12402,3.844244,5.003744
sgpcmbeC1.c1,2005,03 7:30:00,31 ,0.451706,24.56026,4.683948,6.449731
sgpcmbeC1.c1,2005,03 8:30:00,31 ,0.506519,18.90965,3.411998,3.842201
sgpcmbeC1.c1,2005,03 9:30:00,31 ,0.515937,26.34049,4.451863,5.098121
sgpcmbeC1.c1,2005,0310:30:00,31 ,0.567075,21.27003,5.120116,5.770803
sgpcmbeC1.c1,2005,0311:30:00,31 ,0.552794,21.69727,4.518274,4.791742
sgpcmbeC1.c1,2005,0312:30:00,31 ,0.560912,22.78607, 5.46531,5.677014
sgpcmbeC1.c1,2005,0313:30:00,31 ,0.450205,20.61191,5.009466,5.780704
sgpcmbeC1.c1,2005,0314:30:00,31 ,0.603374,14.94359,  4.5957,4.132971
sgpcmbeC1.c1,2005,0315:30:00,31 ,0.581613,18.22746,4.936845,5.205901
sgpcmbeC1.c1,2005,0316:30:00,31 ,0.429147,21.67711, 5.01419,5.899411
sgpcmbeC1.c1,2005,0317:30:00,31 ,0.554467,14.44628,3.360332, 3.58962
sgpcmbeC1.c1,2005,0318:30:00,31 ,0.510664,11.10663, 3.12706,2.753695
sgpcmbeC1.c1,2005,0319:30:00,31 ,0.533125,22.21982,4.123904, 5.41387
sgpcmbeC1.c1,2005,0320:30:00,31 ,0.444037,11.24378,3.062056,3.185811
sgpcmbeC1.c1,2005,0321:30:00,31 ,0.460131,26.52142,4.265602,5.878336
sgpcmbeC1.c1,2005,0322:30:00,31 ,0.431531,22.44172, 4.36224,5.326575
sgpcmbeC1.c1,2005,0323:30:00,31 ,0.490203, 23.2366,4.531139,5.507834