datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,07 0:30:00,23 ,       0,97.42019,11.45114,21.97976
sgpcmbeC1.c1,1999,07 1:30:00,23 ,       0,55.14382,8.194653,13.67436
sgpcmbeC1.c1,1999,07 2:30:00,24 ,       0,362.6436, 26.7618,73.99945
sgpcmbeC1.c1,1999,07 3:30:00,24 ,       0,300.1659, 27.9164,64.78555
sgpcmbeC1.c1,1999,07 4:30:00,24 ,       0, 323.629, 26.1193,67.07551
sgpcmbeC1.c1,1999,07 5:30:00,24 ,       0, 338.975,26.86727,71.21993
sgpcmbeC1.c1,1999,07 6:30:00,24 ,       0,216.3219,24.54017,57.30866
sgpcmbeC1.c1,1999,07 7:30:00,25 ,       0,56.74508,6.766666,14.49881
sgpcmbeC1.c1,1999,07 8:30:00,28 ,       0,41.42567,5.263072,10.72456
sgpcmbeC1.c1,1999,07 9:30:00,29 ,       0,86.55705, 6.86692,17.42722
sgpcmbeC1.c1,1999,0710:30:00,29 ,       0,90.22381,6.537708,17.16515
sgpcmbeC1.c1,1999,0711:30:00,28 ,       0, 61.8997,6.155871,12.44851
sgpcmbeC1.c1,1999,0712:30:00,26 ,       0,98.08863,8.145319,19.26621
sgpcmbeC1.c1,1999,0713:30:00,26 ,       0,65.42365,7.737082,14.28929
sgpcmbeC1.c1,1999,0714:30:00,25 ,       0,64.30543,8.047425,14.19924
sgpcmbeC1.c1,1999,0715:30:00,23 ,       0,92.84307,8.604413,19.64999
sgpcmbeC1.c1,1999,0716:30:00,23 ,       0,122.1178,9.436603,25.02372
sgpcmbeC1.c1,1999,0717:30:00,23 ,       0,200.4028,13.45432, 41.1585
sgpcmbeC1.c1,1999,0718:30:00,24 ,       0,31.42599,6.536817,8.069924
sgpcmbeC1.c1,1999,0719:30:00,24 ,       0,30.02608,7.540633,7.828944
sgpcmbeC1.c1,1999,0720:30:00,23 ,       0,20.43339,6.476664,6.136089
sgpcmbeC1.c1,1999,0721:30:00,23 ,       0,19.25802,5.704534,5.841543
sgpcmbeC1.c1,1999,0722:30:00,23 ,       0,22.94953,6.244264,6.929998
sgpcmbeC1.c1,1999,0723:30:00,23 ,       0, 40.3377,7.064578,10.92335