datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,06 0:30:00,27 ,       0,0.006984,0.000259,0.001344
sgpcmbeC1.c1,1998,06 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 2:30:00,27 ,       0,0.043451,0.001609,0.008362
sgpcmbeC1.c1,1998,06 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,06 5:30:00,28 ,       0,10.14151,6.333043, 2.78117
sgpcmbeC1.c1,1998,06 6:30:00,28 ,1.234987,19.51855, 11.5901,5.116606
sgpcmbeC1.c1,1998,06 7:30:00,28 ,2.066359,40.21715,14.75389,7.673392
sgpcmbeC1.c1,1998,06 8:30:00,28 ,4.437981,45.70868,15.13529,10.47497
sgpcmbeC1.c1,1998,06 9:30:00,28 , 2.28004,47.07994,14.48272,12.22696
sgpcmbeC1.c1,1998,0610:30:00,28 ,2.795485,52.10756,14.72365,15.88605
sgpcmbeC1.c1,1998,0611:30:00,28 ,0.803454,58.51816,15.22963,19.93467
sgpcmbeC1.c1,1998,0612:30:00,28 , 0.86381,62.83356, 15.8091,18.98509
sgpcmbeC1.c1,1998,0613:30:00,27 ,0.904964,57.42944,18.06963,20.80144
sgpcmbeC1.c1,1998,0614:30:00,27 ,2.262978,55.43059,20.10781,20.20187
sgpcmbeC1.c1,1998,0615:30:00,27 ,4.280194,60.96028,18.85571,17.00082
sgpcmbeC1.c1,1998,0616:30:00,27 ,6.701439,52.70678,20.29573,16.11611
sgpcmbeC1.c1,1998,0617:30:00,27 ,1.949911,41.62675,14.78359,9.082879
sgpcmbeC1.c1,1998,0618:30:00,26 ,1.628137,31.33234,14.53184,7.103143
sgpcmbeC1.c1,1998,0619:30:00,26 ,0.201099,12.93405,6.691018,3.165726
sgpcmbeC1.c1,1998,0620:30:00,26 ,       0,1.604393,0.061707,0.314647
sgpcmbeC1.c1,1998,0621:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0622:30:00,26 ,       0,1.792947, 0.06896,0.351626
sgpcmbeC1.c1,1998,0623:30:00,27 ,       0,       0,       0,       0