datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,08 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,08 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,08 2:30:00,30 ,       0,0.303785,0.010126,0.055463
sgpcmbeC1.c1,1999,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,08 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,08 5:30:00,30 ,       0,3.367942,0.571153, 0.73282
sgpcmbeC1.c1,1999,08 6:30:00,30 ,0.579584,15.70608,9.176142,4.712056
sgpcmbeC1.c1,1999,08 7:30:00,30 ,0.278384,31.15996,12.87739, 6.97592
sgpcmbeC1.c1,1999,08 8:30:00,29 ,1.831761,49.41377, 15.1658,10.71622
sgpcmbeC1.c1,1999,08 9:30:00,30 ,5.598776, 47.3113,15.56483,12.87989
sgpcmbeC1.c1,1999,0810:30:00,30 ,4.120273,47.53305, 13.0739,13.00386
sgpcmbeC1.c1,1999,0811:30:00,30 ,2.120681,53.04136,17.17011,18.65497
sgpcmbeC1.c1,1999,0812:30:00,30 ,0.441855,65.97285,16.15954,19.00283
sgpcmbeC1.c1,1999,0813:30:00,30 ,1.840362,65.12061,20.01846,19.31761
sgpcmbeC1.c1,1999,0814:30:00,30 ,3.887469,72.16677,16.57303,17.39475
sgpcmbeC1.c1,1999,0815:30:00,30 ,6.293646,46.89804,18.18658,13.72875
sgpcmbeC1.c1,1999,0816:30:00,30 , 5.83209,32.31924,12.40224,5.232514
sgpcmbeC1.c1,1999,0817:30:00,30 ,3.656389,26.12537,12.71174,3.869998
sgpcmbeC1.c1,1999,0818:30:00,30 ,0.939833,14.70374,  10.787,3.524802
sgpcmbeC1.c1,1999,0819:30:00,29 ,       0,4.713971, 1.22738,1.408833
sgpcmbeC1.c1,1999,0820:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0821:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0822:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0823:30:00,29 ,       0,       0,       0,       0