datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 5:30:00,31 ,       0,26.21148,11.55049,6.754044
sgpcmbeC1.c1,2007,07 6:30:00,31 ,       0, 65.7945, 35.2642, 18.6316
sgpcmbeC1.c1,2007,07 7:30:00,31 ,9.226567,138.7271, 50.9379,30.88395
sgpcmbeC1.c1,2007,07 8:30:00,31 , 13.5741,214.1393,80.99545,49.17437
sgpcmbeC1.c1,2007,07 9:30:00,31 ,43.61874,193.9581,90.22277,46.58834
sgpcmbeC1.c1,2007,0710:30:00,31 ,31.37575,314.8876,  129.14,95.33909
sgpcmbeC1.c1,2007,0711:30:00,31 , 18.7271, 398.661,194.6744,104.3961
sgpcmbeC1.c1,2007,0712:30:00,31 ,1.112077,455.1254,196.5993,125.8044
sgpcmbeC1.c1,2007,0713:30:00,31 ,1.055437,340.0693,161.5827,106.4288
sgpcmbeC1.c1,2007,0714:30:00,30 ,  1.1173,394.5829,157.1936,109.8613
sgpcmbeC1.c1,2007,0715:30:00,31 ,19.64254,313.0349,133.1463,78.61015
sgpcmbeC1.c1,2007,0716:30:00,31 ,1.216179, 255.168,103.2999,60.74951
sgpcmbeC1.c1,2007,0717:30:00,31 ,8.274951,   160.5,70.20293,33.01867
sgpcmbeC1.c1,2007,0718:30:00,31 ,16.26658,134.0394,53.34929,21.35731
sgpcmbeC1.c1,2007,0719:30:00,31 ,4.986054, 36.8232,20.58919,8.624549
sgpcmbeC1.c1,2007,0720:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0723:30:00,31 ,       0,       0,       0,       0