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 ,       0,17.06161,2.535688,4.721003
sgpcmbeC1.c1,2002,03 7:30:00,27 , 0.00983,54.81355,24.04163,22.34132
sgpcmbeC1.c1,2002,03 8:30:00,26 ,0.043578,86.06941,34.83046,28.70911
sgpcmbeC1.c1,2002,03 9:30:00,26 , 0.06892,147.3581,57.84566,46.58224
sgpcmbeC1.c1,2002,0310:30:00,27 ,0.086426,130.7539,45.10831,33.75808
sgpcmbeC1.c1,2002,0311:30:00,27 ,0.069908,135.8297,44.99521,44.26409
sgpcmbeC1.c1,2002,0312:30:00,26 ,0.117308,212.0709, 48.3718,61.31791
sgpcmbeC1.c1,2002,0313:30:00,25 ,       0, 141.258,33.01101,35.13159
sgpcmbeC1.c1,2002,0314:30:00,25 ,       0,236.4315,54.71609,52.97913
sgpcmbeC1.c1,2002,0315:30:00,26 ,       0,242.0643, 68.7157,63.91804
sgpcmbeC1.c1,2002,0316:30:00,27 ,       0,96.54281,44.31744,29.85654
sgpcmbeC1.c1,2002,0317:30:00,27 ,       0,56.22036,30.92381,22.42895
sgpcmbeC1.c1,2002,0318:30:00,27 ,       0,22.19872,6.611226,7.767094
sgpcmbeC1.c1,2002,0319:30:00,27 ,       0,0.942671,0.092247, 0.26804
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