datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,15 ,       0,12.01363,2.400138,3.436431
sgpcmbeC1.c1,2002,02 1:30:00,15 ,       0,14.31683,2.529318,3.673027
sgpcmbeC1.c1,2002,02 2:30:00,15 ,       0,7.323419,1.941312,2.254889
sgpcmbeC1.c1,2002,02 3:30:00,15 ,       0,37.28728,5.477174,9.639989
sgpcmbeC1.c1,2002,02 4:30:00,15 ,       0,26.25317,3.358752,6.699084
sgpcmbeC1.c1,2002,02 5:30:00,15 ,       0,  9.6523,1.835625,2.746805
sgpcmbeC1.c1,2002,02 6:30:00,15 ,       0,15.21909, 2.44558,4.440845
sgpcmbeC1.c1,2002,02 7:30:00,15 ,       0,10.83183,1.726174, 3.02936
sgpcmbeC1.c1,2002,02 8:30:00,15 ,       0,12.82368,2.141844,3.699342
sgpcmbeC1.c1,2002,02 9:30:00,17 ,       0,5.844887,1.432967,1.804412
sgpcmbeC1.c1,2002,0210:30:00,18 ,       0,23.78778,3.319424,6.439894
sgpcmbeC1.c1,2002,0211:30:00,17 ,       0,18.69524,3.782561,5.724657
sgpcmbeC1.c1,2002,0212:30:00,17 ,       0,14.74347,3.082213,4.079334
sgpcmbeC1.c1,2002,0213:30:00,17 ,       0,24.91583,3.420791,6.136912
sgpcmbeC1.c1,2002,0214:30:00,17 ,0.101287,16.48674, 2.88992,3.977239
sgpcmbeC1.c1,2002,0215:30:00,15 ,       0,6.075825, 1.84213,1.609879
sgpcmbeC1.c1,2002,0216:30:00,15 ,0.017633, 30.6788,3.875423,7.723074
sgpcmbeC1.c1,2002,0217:30:00,15 ,0.186379,39.13231,4.313716,9.685762
sgpcmbeC1.c1,2002,0218:30:00,15 ,0.347567,62.52567,6.166627,15.66725
sgpcmbeC1.c1,2002,0219:30:00,15 ,0.066151,47.76137,4.866507,11.94753
sgpcmbeC1.c1,2002,0220:30:00,15 ,       0,193.8628,14.30556,49.68372
sgpcmbeC1.c1,2002,0221:30:00,15 ,       0,228.4947,16.42557,58.67583
sgpcmbeC1.c1,2002,0222:30:00,15 ,       0,39.30851,3.650792,9.891981
sgpcmbeC1.c1,2002,0223:30:00,15 ,       0,17.66585,2.333195,4.344548