datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,07 0:30:00,23 ,       0,89.32856,10.64112,21.14496
sgpcmbeC1.c1,1999,07 1:30:00,24 ,       0,550.6974,30.75267, 111.701
sgpcmbeC1.c1,1999,07 2:30:00,24 ,       0, 262.151,25.80008, 60.5886
sgpcmbeC1.c1,1999,07 3:30:00,24 ,       0,174.2381,23.01066,48.78936
sgpcmbeC1.c1,1999,07 4:30:00,24 ,       0,384.9757,33.52133,85.21359
sgpcmbeC1.c1,1999,07 5:30:00,24 ,       0,341.5778,28.75358,72.16953
sgpcmbeC1.c1,1999,07 6:30:00,24 ,       0, 206.711,22.81571,51.24089
sgpcmbeC1.c1,1999,07 7:30:00,25 ,       0,64.43857,6.913399,17.55582
sgpcmbeC1.c1,1999,07 8:30:00,28 ,       0,48.14038,4.935277,12.08563
sgpcmbeC1.c1,1999,07 9:30:00,29 ,       0,48.05624,5.059712,11.38859
sgpcmbeC1.c1,1999,0710:30:00,29 ,       0,41.62334,4.974208,10.37707
sgpcmbeC1.c1,1999,0711:30:00,28 ,       0,75.36655,6.261113,14.63246
sgpcmbeC1.c1,1999,0712:30:00,26 ,       0, 118.169,10.42486,23.71741
sgpcmbeC1.c1,1999,0713:30:00,26 ,       0,79.17213,9.724941,17.29188
sgpcmbeC1.c1,1999,0714:30:00,25 ,       0,65.52612,9.941168,16.12024
sgpcmbeC1.c1,1999,0715:30:00,23 ,       0,97.08479,8.950427,  20.724
sgpcmbeC1.c1,1999,0716:30:00,23 ,       0,127.5138,9.719766,26.11095
sgpcmbeC1.c1,1999,0717:30:00,23 ,       0, 213.608,14.09648, 43.9049
sgpcmbeC1.c1,1999,0718:30:00,24 ,       0,36.33236,6.634047,8.752463
sgpcmbeC1.c1,1999,0719:30:00,24 ,       0,70.97417,8.767277,14.33216
sgpcmbeC1.c1,1999,0720:30:00,23 ,       0,28.30294,7.296951,7.675911
sgpcmbeC1.c1,1999,0721:30:00,23 ,       0,17.43464,5.766137,5.544258
sgpcmbeC1.c1,1999,0722:30:00,23 ,       0,20.16125,5.469271,6.160393
sgpcmbeC1.c1,1999,0723:30:00,23 ,       0,46.81775,6.806875,11.71769