datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,06 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 1:30:00,27 ,       0,1.062838,0.061269,0.230221
sgpcmbeC1.c1,1998,06 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 5:30:00,28 ,2.227709,29.31441,20.14722,6.925907
sgpcmbeC1.c1,1998,06 6:30:00,28 ,6.506085,69.15154,43.73237,17.59985
sgpcmbeC1.c1,1998,06 7:30:00,28 ,9.146913,148.9695,64.18027,26.39828
sgpcmbeC1.c1,1998,06 8:30:00,28 ,20.04127,181.3414,73.68587,39.32176
sgpcmbeC1.c1,1998,06 9:30:00,28 ,27.72853,207.8302,78.81323,48.30305
sgpcmbeC1.c1,1998,0610:30:00,28 ,28.30414,274.2588,80.65572,75.53608
sgpcmbeC1.c1,1998,0611:30:00,28 ,12.15922,284.0944,82.44167,98.06393
sgpcmbeC1.c1,1998,0612:30:00,28 ,3.179439,350.2756,82.28342,102.3634
sgpcmbeC1.c1,1998,0613:30:00,27 ,12.93644,309.1535,97.94249,103.8092
sgpcmbeC1.c1,1998,0614:30:00,27 ,29.25264,283.8158,107.9315,93.77453
sgpcmbeC1.c1,1998,0615:30:00,27 , 34.4077, 281.076,94.95049,70.61045
sgpcmbeC1.c1,1998,0616:30:00,27 ,31.05569,230.1049,  99.484,62.85136
sgpcmbeC1.c1,1998,0617:30:00,27 ,10.47668,166.0392,63.95144,30.37427
sgpcmbeC1.c1,1998,0618:30:00,26 , 7.81252,122.9233, 56.2392,23.62024
sgpcmbeC1.c1,1998,0619:30:00,26 ,2.177898,38.29055,21.64027,9.110812
sgpcmbeC1.c1,1998,0620:30:00,26 ,       0,4.082623,0.173971,0.801874
sgpcmbeC1.c1,1998,0621:30:00,26 ,       0,0.427762,0.016452,0.083891
sgpcmbeC1.c1,1998,0622:30:00,26 ,       0,1.993811,0.076685,0.391019
sgpcmbeC1.c1,1998,0623:30:00,27 ,       0, 0.60765,0.022506,0.116942