datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,01 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 2:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 7:30:00,31 ,       0,7.758713,3.428199,2.003047
sgpcmbeC1.c1,2003,01 8:30:00,31 ,10.30382,72.03386,42.30027,14.70129
sgpcmbeC1.c1,2003,01 9:30:00,31 ,32.32526,166.2088,82.75841,33.06533
sgpcmbeC1.c1,2003,0110:30:00,31 ,53.78815,259.1703,109.0838,52.85553
sgpcmbeC1.c1,2003,0111:30:00,31 ,56.72379,316.9047,142.3819,85.23085
sgpcmbeC1.c1,2003,0112:30:00,31 ,58.37716,375.8015,165.2424,109.5016
sgpcmbeC1.c1,2003,0113:30:00,31 ,57.03292,324.4211,142.7131,90.32487
sgpcmbeC1.c1,2003,0114:30:00,31 ,54.29074,272.1522,122.5997, 70.6086
sgpcmbeC1.c1,2003,0115:30:00,31 ,45.73621,197.1167,93.79034,44.64811
sgpcmbeC1.c1,2003,0116:30:00,31 ,27.23797,108.5383,56.48334, 22.9535
sgpcmbeC1.c1,2003,0117:30:00,31 ,1.134423,25.10276,11.20166,6.935204
sgpcmbeC1.c1,2003,0118:30:00,31 ,       0,0.053962,0.001741,0.009692
sgpcmbeC1.c1,2003,0119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0120:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0122:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0123:30:00,24 ,       0,       0,       0,       0