datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,07 0:30:00,31 ,       0,0.037906,0.001223,0.006808
sgpcmbeC1.c1,1999,07 1:30:00,31 ,       0,0.001758,0.000083,0.000343
sgpcmbeC1.c1,1999,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 4:30:00,31 ,       0,0.002447,0.000079, 0.00044
sgpcmbeC1.c1,1999,07 5:30:00,31 ,       0,22.58752,11.71306,6.244372
sgpcmbeC1.c1,1999,07 6:30:00,31 ,0.331386,161.6545,107.3215,41.69052
sgpcmbeC1.c1,1999,07 7:30:00,31 ,3.212328,346.5104,274.2273,86.52306
sgpcmbeC1.c1,1999,07 8:30:00,31 ,19.96809,574.4741,468.8227,124.7415
sgpcmbeC1.c1,1999,07 9:30:00,31 ,109.9738,749.6722,643.9955,131.7831
sgpcmbeC1.c1,1999,0710:30:00,31 ,288.2269,871.5939,772.3372,121.8717
sgpcmbeC1.c1,1999,0711:30:00,31 ,529.0886,949.6697,867.0023, 114.935
sgpcmbeC1.c1,1999,0712:30:00,31 ,438.0589,1004.375, 890.847,140.7674
sgpcmbeC1.c1,1999,0713:30:00,31 ,445.7083,966.9307,863.0808,114.8125
sgpcmbeC1.c1,1999,0714:30:00,31 ,434.9519,874.3971, 789.148,96.42188
sgpcmbeC1.c1,1999,0715:30:00,31 , 424.549,788.2004,690.9573,70.20351
sgpcmbeC1.c1,1999,0716:30:00,31 ,309.5718,585.3351,527.0355,54.79608
sgpcmbeC1.c1,1999,0717:30:00,31 ,194.9697, 388.499,345.8786,36.69965
sgpcmbeC1.c1,1999,0718:30:00,31 ,42.83415,191.6011,150.9803,32.84514
sgpcmbeC1.c1,1999,0719:30:00,31 ,3.254357,38.42221,24.47265,9.028367
sgpcmbeC1.c1,1999,0720:30:00,31 ,       0,0.270402,0.022589,0.059982
sgpcmbeC1.c1,1999,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0723:30:00,31 ,       0,       0,       0,       0