datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 1:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 4:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 7:30:00,23 ,0.723899,32.91721,11.83449,10.09627
sgpcmbeC1.c1,1998,02 8:30:00,22 ,17.25995,138.9079,63.91381,31.55375
sgpcmbeC1.c1,1998,02 9:30:00,22 ,47.23457,221.2706,116.1073,52.11898
sgpcmbeC1.c1,1998,0210:30:00,22 ,66.51563,329.4994, 167.402,80.07858
sgpcmbeC1.c1,1998,0211:30:00,23 ,70.41657, 440.154,198.0235,102.7875
sgpcmbeC1.c1,1998,0212:30:00,23 ,69.05179,364.5245,207.3567,102.3667
sgpcmbeC1.c1,1998,0213:30:00,22 ,69.46754,374.1309,173.9322,89.77053
sgpcmbeC1.c1,1998,0214:30:00,22 ,67.32346,312.5699,168.5503,85.35701
sgpcmbeC1.c1,1998,0215:30:00,23 ,62.44227,279.2741,145.3991,66.13604
sgpcmbeC1.c1,1998,0216:30:00,23 , 24.9105,171.9982,93.07663,41.14402
sgpcmbeC1.c1,1998,0217:30:00,22 , 7.43983,80.35165,38.54138,16.55462
sgpcmbeC1.c1,1998,0218:30:00,23 ,       0,8.849545,2.054468,2.274656
sgpcmbeC1.c1,1998,0219:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0220:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0221:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0222:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0223:30:00,25 ,       0,       0,       0,       0