datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,03 0:30:00,29 ,       0,0.256514,0.008845,0.047634
sgpcmbeC1.c1,1999,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 3:30:00,30 ,       0,0.689023,0.022967,0.125798
sgpcmbeC1.c1,1999,03 4:30:00,29 ,       0,0.004556,0.000157,0.000846
sgpcmbeC1.c1,1999,03 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 6:30:00,29 ,       0,7.821521, 1.14002,2.080244
sgpcmbeC1.c1,1999,03 7:30:00,29 , 0.00693,49.60385,18.70255,18.80104
sgpcmbeC1.c1,1999,03 8:30:00,29 ,0.035035,100.1406,29.52509,28.91588
sgpcmbeC1.c1,1999,03 9:30:00,29 ,0.077261,204.9739,51.29602, 45.3854
sgpcmbeC1.c1,1999,0310:30:00,29 ,0.072659,183.0945,57.58272,55.23471
sgpcmbeC1.c1,1999,0311:30:00,29 ,0.001001, 261.339, 51.9713,68.52033
sgpcmbeC1.c1,1999,0312:30:00,29 ,0.136629,207.5083,57.65641,66.65932
sgpcmbeC1.c1,1999,0313:30:00,30 ,0.098057, 226.571,64.32688, 78.4813
sgpcmbeC1.c1,1999,0314:30:00,30 ,0.072093,217.2382,61.52696,65.17969
sgpcmbeC1.c1,1999,0315:30:00,30 ,0.129376,152.4431,49.79852,46.55476
sgpcmbeC1.c1,1999,0316:30:00,30 ,0.019115,126.1686,37.71768,34.86234
sgpcmbeC1.c1,1999,0317:30:00,30 ,0.000233,55.55955,24.29995,23.21425
sgpcmbeC1.c1,1999,0318:30:00,30 ,       0,16.61951,4.245576,5.507793
sgpcmbeC1.c1,1999,0319:30:00,29 ,       0,0.608388,0.020979,0.112975
sgpcmbeC1.c1,1999,0320:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0321:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0322:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0323:30:00,29 ,       0,       0,       0,       0