datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,08 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 5:30:00,31 ,       0,10.25488,2.569872,2.713222
sgpcmbeC1.c1,2007,08 6:30:00,31 , 2.32656,33.91356,17.34356,6.519221
sgpcmbeC1.c1,2007,08 7:30:00,31 ,5.461467,56.58635,20.50286, 15.4448
sgpcmbeC1.c1,2007,08 8:30:00,31 ,2.661601,74.00408,18.37889,17.78255
sgpcmbeC1.c1,2007,08 9:30:00,31 ,1.925353, 80.3193,19.90085,23.54642
sgpcmbeC1.c1,2007,0810:30:00,31 , 1.44084, 96.5139,28.31001,29.88211
sgpcmbeC1.c1,2007,0811:30:00,31 ,1.453528, 114.645,27.10716,28.14969
sgpcmbeC1.c1,2007,0812:30:00,31 ,2.197423,101.8792, 26.9504,23.35418
sgpcmbeC1.c1,2007,0813:30:00,31 ,1.588709,105.0102,33.43728,29.98081
sgpcmbeC1.c1,2007,0814:30:00,31 ,2.254002,177.6349,29.26314,35.06916
sgpcmbeC1.c1,2007,0815:30:00,31 ,1.217519,89.26493,  26.173,24.60575
sgpcmbeC1.c1,2007,0816:30:00,31 ,2.939262,43.27438,18.14656,13.25689
sgpcmbeC1.c1,2007,0817:30:00,31 ,4.674025,42.48075,18.08559,11.35976
sgpcmbeC1.c1,2007,0818:30:00,31 ,8.509122,  33.509,18.44113,6.325584
sgpcmbeC1.c1,2007,0819:30:00,31 ,       0,11.62588,4.915497,3.825044
sgpcmbeC1.c1,2007,0820:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0821:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0823:30:00,31 ,       0,       0,       0,       0