datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,03 0:30:00,9 ,       0,1.065544,0.118394,0.355181
sgpcmbeC1.c1,1997,03 1:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 2:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 3:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 4:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 5:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 6:30:00,11 ,1.260005, 32.0309,16.02471,11.17295
sgpcmbeC1.c1,1997,03 7:30:00,11 ,5.318919,71.25247,48.11634,25.00071
sgpcmbeC1.c1,1997,03 8:30:00,11 ,12.12178,85.35075,57.56379,21.90317
sgpcmbeC1.c1,1997,03 9:30:00,10 ,4.800103,75.48054,52.34843,18.82862
sgpcmbeC1.c1,1997,0310:30:00,10 ,16.25554,171.1556,51.20056,43.60165
sgpcmbeC1.c1,1997,0311:30:00,10 ,3.561817,193.0548,42.47852, 54.6074
sgpcmbeC1.c1,1997,0312:30:00,10 ,3.347672,159.6752,50.96706,56.65656
sgpcmbeC1.c1,1997,0313:30:00,10 ,15.89751,193.9384,47.18183,55.54759
sgpcmbeC1.c1,1997,0314:30:00,10 ,2.568391,259.4363,68.30382,76.08368
sgpcmbeC1.c1,1997,0315:30:00,11 ,9.632081,134.2266,49.38993,32.16674
sgpcmbeC1.c1,1997,0316:30:00,11 ,7.151159,124.0671,54.69128,32.13702
sgpcmbeC1.c1,1997,0317:30:00,10 ,4.567954,98.45382,49.71752,28.75559
sgpcmbeC1.c1,1997,0318:30:00,10 ,2.270646,42.01554,24.22997,14.76388
sgpcmbeC1.c1,1997,0319:30:00,11 ,       0, 1.65354,0.292353,0.650763
sgpcmbeC1.c1,1997,0320:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0321:30:00,11 ,       0,1.888525,0.257476,0.610564
sgpcmbeC1.c1,1997,0322:30:00,11 ,       0,2.106992,0.227056,0.634421
sgpcmbeC1.c1,1997,0323:30:00,8 ,       0,       0,       0,       0