datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,01 0:30:00,25 ,       0,0.169785,0.006791,0.033957
sgpcmbeC1.c1,2003,01 1:30:00,26 ,       0,0.082928, 0.00319,0.016264
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 ,       0,5.252797,0.893455,1.065517
sgpcmbeC1.c1,2003,01 8:30:00,31 ,0.051592,114.3698,46.64458, 34.2793
sgpcmbeC1.c1,2003,01 9:30:00,31 ,0.267628,288.5844,139.3325,103.5694
sgpcmbeC1.c1,2003,0110:30:00,31 ,0.326614,439.2645,237.9954,165.3125
sgpcmbeC1.c1,2003,0111:30:00,31 ,0.371429,542.7375, 291.129,203.0288
sgpcmbeC1.c1,2003,0112:30:00,31 ,0.749527,590.1498,293.8322,236.8409
sgpcmbeC1.c1,2003,0113:30:00,31 ,0.761322,572.4193,320.6446,209.0063
sgpcmbeC1.c1,2003,0114:30:00,31 ,0.372574,491.1652,271.0314,178.1228
sgpcmbeC1.c1,2003,0115:30:00,31 ,0.011452,333.3529, 183.692,127.8653
sgpcmbeC1.c1,2003,0116:30:00,31 ,0.044937,169.9723,79.34802,57.30333
sgpcmbeC1.c1,2003,0117:30:00,31 ,0.000532,26.58257,6.743234,7.565206
sgpcmbeC1.c1,2003,0118:30:00,31 ,       0,1.916426,0.073995,0.348547
sgpcmbeC1.c1,2003,0119:30:00,30 ,       0,0.228116,0.007604,0.041648
sgpcmbeC1.c1,2003,0120:30:00,27 ,       0,0.050537,0.001872,0.009726
sgpcmbeC1.c1,2003,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0122:30:00,24 ,       0,0.500585,0.020858,0.102182
sgpcmbeC1.c1,2003,0123:30:00,24 ,       0,       0,       0,       0