datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,08 0:30:00,31 ,       0,0.133653,0.004339,   0.024
sgpcmbeC1.c1,2002,08 1:30:00,31 ,       0,0.516511,0.016662,0.092768
sgpcmbeC1.c1,2002,08 2:30:00,31 ,       0,0.369589,0.023509,0.091008
sgpcmbeC1.c1,2002,08 3:30:00,31 ,       0,0.203287,0.008937,0.038423
sgpcmbeC1.c1,2002,08 4:30:00,31 ,       0,0.576701,0.018603,0.103579
sgpcmbeC1.c1,2002,08 5:30:00,31 ,       0,1.752835,0.478193,0.523631
sgpcmbeC1.c1,2002,08 6:30:00,31 ,       0,17.76914,9.557091,4.961401
sgpcmbeC1.c1,2002,08 7:30:00,31 ,       0,25.51285,12.93837,5.758805
sgpcmbeC1.c1,2002,08 8:30:00,31 ,0.251967,41.37623,14.72865,8.900744
sgpcmbeC1.c1,2002,08 9:30:00,31 , 0.66662,38.23842,13.72385,9.560552
sgpcmbeC1.c1,2002,0810:30:00,31 ,3.453431,64.36585,15.10215,14.27293
sgpcmbeC1.c1,2002,0811:30:00,31 ,1.327575,65.97242,24.27068,20.58193
sgpcmbeC1.c1,2002,0812:30:00,31 ,0.574626,66.68586,25.73325,21.35917
sgpcmbeC1.c1,2002,0813:30:00,31 ,1.812126, 69.1348,28.93811,21.22871
sgpcmbeC1.c1,2002,0814:30:00,31 ,3.933685,73.24855,27.66897,19.49656
sgpcmbeC1.c1,2002,0815:30:00,31 ,1.217875,55.42281,21.01045,14.02906
sgpcmbeC1.c1,2002,0816:30:00,31 ,3.046461,57.17823,18.04909,12.36286
sgpcmbeC1.c1,2002,0817:30:00,31 ,2.572713,39.01117,14.32668,7.656354
sgpcmbeC1.c1,2002,0818:30:00,31 ,3.242656,20.65266,  10.953,3.732098
sgpcmbeC1.c1,2002,0819:30:00,31 ,       0,6.592112,1.607734,1.831975
sgpcmbeC1.c1,2002,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0821:30:00,31 ,       0,0.019085,0.000616,0.003428
sgpcmbeC1.c1,2002,0822:30:00,31 ,       0,0.016936,0.000546,0.003042
sgpcmbeC1.c1,2002,0823:30:00,31 ,       0,0.171009,0.005516,0.030714