datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 2:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 4:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 6:30:00,27 ,       0,14.28375,4.983646,5.526318
sgpcmbeC1.c1,2002,03 7:30:00,27 ,11.65699, 116.866,51.69426,27.10792
sgpcmbeC1.c1,2002,03 8:30:00,26 ,18.19568,196.6438,117.0628, 50.8346
sgpcmbeC1.c1,2002,03 9:30:00,26 ,57.80786,329.2677,165.3316,78.76433
sgpcmbeC1.c1,2002,0310:30:00,27 ,69.83743,463.1964,195.2716,107.7219
sgpcmbeC1.c1,2002,0311:30:00,27 ,80.30306,472.7805,232.8104,139.4778
sgpcmbeC1.c1,2002,0312:30:00,26 ,81.33996,497.3328,216.4258, 125.276
sgpcmbeC1.c1,2002,0313:30:00,25 ,75.59657,483.7546,198.4465,120.0138
sgpcmbeC1.c1,2002,0314:30:00,25 ,63.83678,460.4224,187.2038,118.1473
sgpcmbeC1.c1,2002,0315:30:00,26 ,64.91795,411.4763,177.0536,93.28372
sgpcmbeC1.c1,2002,0316:30:00,27 ,42.02629,326.6292,139.8984,77.05382
sgpcmbeC1.c1,2002,0317:30:00,27 ,17.28561,180.3738,80.16433,42.45918
sgpcmbeC1.c1,2002,0318:30:00,27 ,0.865032,28.51842,13.96859,8.032159
sgpcmbeC1.c1,2002,0319:30:00,27 ,       0,0.000065,2.407E-6,0.000013
sgpcmbeC1.c1,2002,0320:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0321:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0322:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0323:30:00,20 ,       0,       0,       0,       0