datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,30 ,       0,0.253766,0.008459,0.046331
sgpcmbeC1.c1,2004,07 1:30:00,30 ,       0,1.026088,0.040926,0.188279
sgpcmbeC1.c1,2004,07 2:30:00,30 ,       0,1.076956,0.054937,0.219365
sgpcmbeC1.c1,2004,07 3:30:00,30 ,       0,0.488079,0.016269,0.089111
sgpcmbeC1.c1,2004,07 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 5:30:00,30 ,0.718771,23.53366,10.72406, 6.19501
sgpcmbeC1.c1,2004,07 6:30:00,30 ,11.29424,165.2836,98.62182,44.68875
sgpcmbeC1.c1,2004,07 7:30:00,30 ,18.13973,367.1326,245.1343,118.0863
sgpcmbeC1.c1,2004,07 8:30:00,30 , 60.5781,565.0614,409.3311,170.3476
sgpcmbeC1.c1,2004,07 9:30:00,30 ,15.62205,743.6786,536.8285,217.4547
sgpcmbeC1.c1,2004,0710:30:00,30 ,49.70526,942.0156,672.7754,260.8641
sgpcmbeC1.c1,2004,0711:30:00,31 ,109.4832,970.9733,764.6774,276.8319
sgpcmbeC1.c1,2004,0712:30:00,31 ,87.06953,1033.416,808.6624,268.0322
sgpcmbeC1.c1,2004,0713:30:00,31 ,93.59544,975.5361, 773.172,271.7237
sgpcmbeC1.c1,2004,0714:30:00,31 ,  15.359,896.2574,664.2479,274.1315
sgpcmbeC1.c1,2004,0715:30:00,31 ,16.20586,774.7989,599.7484,209.4621
sgpcmbeC1.c1,2004,0716:30:00,31 ,60.86309,596.6577,468.1521,154.4079
sgpcmbeC1.c1,2004,0717:30:00,31 ,31.49943,435.0511,308.9139,111.5736
sgpcmbeC1.c1,2004,0718:30:00,31 ,12.88791,222.5933,137.4294,56.16273
sgpcmbeC1.c1,2004,0719:30:00,31 ,0.780761, 42.3589,24.29628,10.25659
sgpcmbeC1.c1,2004,0720:30:00,31 ,       0,0.384478, 0.02875,0.091624
sgpcmbeC1.c1,2004,0721:30:00,31 ,       0,0.050118,0.001617,0.009001
sgpcmbeC1.c1,2004,0722:30:00,31 ,       0, 0.45941, 0.01482,0.082512
sgpcmbeC1.c1,2004,0723:30:00,31 ,       0, 0.25738,0.008303,0.046227