datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,01 0:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 1:30:00,9 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 2:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 4:30:00,14 ,       0,0.054538,0.003896,0.014576
sgpcmbeC1.c1,2001,01 5:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 7:30:00,31 ,       0,6.657909,1.770054, 1.91675
sgpcmbeC1.c1,2001,01 8:30:00,31 ,0.042268,58.78196, 25.2169,19.93517
sgpcmbeC1.c1,2001,01 9:30:00,31 ,0.037358,58.63639,30.78661,21.45294
sgpcmbeC1.c1,2001,0110:30:00,31 ,0.109545,78.52382,  29.262,20.62096
sgpcmbeC1.c1,2001,0111:30:00,31 ,0.255761,146.9707,30.99652,36.04402
sgpcmbeC1.c1,2001,0112:30:00,31 ,       0,213.4597,25.04364, 41.5708
sgpcmbeC1.c1,2001,0113:30:00,31 ,0.131674,110.5755, 31.6436,33.29892
sgpcmbeC1.c1,2001,0114:30:00,31 ,0.026501,154.5449, 49.7051,42.60992
sgpcmbeC1.c1,2001,0115:30:00,31 ,0.108453, 105.454,37.92159,29.17388
sgpcmbeC1.c1,2001,0116:30:00,31 ,       0,56.74407,28.67641,22.26002
sgpcmbeC1.c1,2001,0117:30:00,31 ,0.001207,30.60147,8.584382,9.302704
sgpcmbeC1.c1,2001,0118:30:00,30 ,       0,0.254054,0.008468,0.046384
sgpcmbeC1.c1,2001,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0120:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0121:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0122:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0123:30:00,10 ,       0,       0,       0,       0