datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,03 0:30:00,29 ,       0,0.010524, 0.00041,0.001962
sgpcmbeC1.c1,1999,03 1:30:00,29 ,       0,0.016922,0.000798, 0.00331
sgpcmbeC1.c1,1999,03 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 3:30:00,30 ,       0,0.113148,0.003772,0.020658
sgpcmbeC1.c1,1999,03 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 5:30:00,29 ,       0,0.007882,0.000272,0.001464
sgpcmbeC1.c1,1999,03 6:30:00,29 ,       0,6.298314,1.327861,1.945667
sgpcmbeC1.c1,1999,03 7:30:00,29 ,0.739289,77.22472,19.98799,17.36872
sgpcmbeC1.c1,1999,03 8:30:00,29 , 1.62985,160.2283,49.60857,34.89419
sgpcmbeC1.c1,1999,03 9:30:00,29 , 1.44453,226.7705,85.37467,45.36048
sgpcmbeC1.c1,1999,0310:30:00,28 ,23.06417,414.6445,111.0436,71.70685
sgpcmbeC1.c1,1999,0311:30:00,28 ,14.77129, 481.507,127.0928,84.17156
sgpcmbeC1.c1,1999,0312:30:00,28 ,17.19865,610.2618,134.6686,105.5373
sgpcmbeC1.c1,1999,0313:30:00,29 ,7.780187,591.0494,123.7857,103.6906
sgpcmbeC1.c1,1999,0314:30:00,30 ,12.66087,496.9607,115.8509,87.14926
sgpcmbeC1.c1,1999,0315:30:00,30 ,6.591783,406.8268,99.74514,81.48971
sgpcmbeC1.c1,1999,0316:30:00,30 ,3.303808,271.7705,63.06549, 51.6382
sgpcmbeC1.c1,1999,0317:30:00,30 ,0.928611,124.4553,27.90033,24.67997
sgpcmbeC1.c1,1999,0318:30:00,30 ,       0,13.12009,4.117595,4.160081
sgpcmbeC1.c1,1999,0319:30:00,29 ,       0,       0,       0,       0
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