datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,08 0:30:00,30 ,       0, 1.18399,0.039466,0.216166
sgpcmbeC1.c1,1998,08 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 2:30:00,30 ,       0,1.239017,0.041301,0.226213
sgpcmbeC1.c1,1998,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 5:30:00,30 ,       0,10.85507,3.926206,2.742214
sgpcmbeC1.c1,1998,08 6:30:00,30 ,10.65421,64.43104,39.70997,10.44103
sgpcmbeC1.c1,1998,08 7:30:00,30 ,29.48987,99.93774,60.82572,14.91244
sgpcmbeC1.c1,1998,08 8:30:00,30 ,24.41528,153.7587,72.71827,32.36485
sgpcmbeC1.c1,1998,08 9:30:00,30 ,30.23037, 215.029,77.58182, 43.6915
sgpcmbeC1.c1,1998,0810:30:00,30 ,33.39436, 194.152,78.67336,56.21622
sgpcmbeC1.c1,1998,0811:30:00,30 ,12.84785, 296.478,105.6556,93.37751
sgpcmbeC1.c1,1998,0812:30:00,30 ,4.346721,323.9639,154.1397,109.3469
sgpcmbeC1.c1,1998,0813:30:00,31 ,16.15956,379.8517,156.7448,101.0775
sgpcmbeC1.c1,1998,0814:30:00,31 ,29.76947,318.3957,160.1468,90.37679
sgpcmbeC1.c1,1998,0815:30:00,31 ,6.095395,269.6603,118.8322,77.86803
sgpcmbeC1.c1,1998,0816:30:00,31 ,5.509168,194.5684,88.87299,45.02649
sgpcmbeC1.c1,1998,0817:30:00,31 ,7.190448,123.6692,58.75426,29.51131
sgpcmbeC1.c1,1998,0818:30:00,31 ,3.987955,56.30649,36.50532,13.04517
sgpcmbeC1.c1,1998,0819:30:00,31 ,       0,25.16444, 6.82761,5.844499
sgpcmbeC1.c1,1998,0820:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0821:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0823:30:00,30 ,       0,0.522672,0.017422,0.095426