datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,21 ,       0,304.2263, 33.6793,74.44077
sgpcmbeC1.c1,1998,07 1:30:00,21 ,       0,260.9227,31.23392,56.78904
sgpcmbeC1.c1,1998,07 2:30:00,21 ,       0, 117.928, 21.4695,31.27808
sgpcmbeC1.c1,1998,07 3:30:00,21 ,       0,587.6496,70.29712,150.2489
sgpcmbeC1.c1,1998,07 4:30:00,21 ,       0,544.3359,67.04882,128.2436
sgpcmbeC1.c1,1998,07 5:30:00,20 ,       0,269.8341,60.38072,88.82891
sgpcmbeC1.c1,1998,07 6:30:00,20 ,       0,414.3572,58.77923,102.9869
sgpcmbeC1.c1,1998,07 7:30:00,20 ,       0,375.7957,52.64741,106.8138
sgpcmbeC1.c1,1998,07 8:30:00,23 ,       0,248.9706,40.91227,73.41919
sgpcmbeC1.c1,1998,07 9:30:00,24 ,       0,380.5287, 43.4789,91.13225
sgpcmbeC1.c1,1998,0710:30:00,24 ,       0,303.9787,26.20536,65.10516
sgpcmbeC1.c1,1998,0711:30:00,24 ,       0,227.6929,17.13838,46.02045
sgpcmbeC1.c1,1998,0712:30:00,25 ,       0,23.55451,5.662962,  6.8121
sgpcmbeC1.c1,1998,0713:30:00,25 ,       0,35.97952,5.769843,8.672223
sgpcmbeC1.c1,1998,0714:30:00,25 ,       0,33.62612,7.183599,10.53624
sgpcmbeC1.c1,1998,0715:30:00,25 ,       0,33.86773,7.789292,10.16188
sgpcmbeC1.c1,1998,0716:30:00,25 ,       0,46.46304, 9.17185,13.25254
sgpcmbeC1.c1,1998,0717:30:00,24 ,       0,33.77509,8.753266,9.827933
sgpcmbeC1.c1,1998,0718:30:00,23 ,       0,17.13139,5.250224,5.739415
sgpcmbeC1.c1,1998,0719:30:00,23 ,       0, 18.9725,5.681394,6.366099
sgpcmbeC1.c1,1998,0720:30:00,23 ,       0,22.65844,5.889833,7.404567
sgpcmbeC1.c1,1998,0721:30:00,23 ,       0,29.07498,7.516636,8.478699
sgpcmbeC1.c1,1998,0722:30:00,22 ,       0,142.8359,13.47233,30.06952
sgpcmbeC1.c1,1998,0723:30:00,22 ,       0, 49.2298, 11.8373,14.36496