datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,01 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 1:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 3:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 7:30:00,29 ,       0,9.775851,3.096211, 2.10144
sgpcmbeC1.c1,2002,01 8:30:00,29 ,11.60405,91.77897,41.31561, 17.0986
sgpcmbeC1.c1,2002,01 9:30:00,29 ,31.75072,170.7599,89.48514,40.84343
sgpcmbeC1.c1,2002,0110:30:00,29 ,45.33868,243.2532,125.0301, 63.3184
sgpcmbeC1.c1,2002,0111:30:00,28 ,42.49506,354.0606,162.7131, 90.2743
sgpcmbeC1.c1,2002,0112:30:00,29 ,42.03445,412.4942,159.4024,94.50515
sgpcmbeC1.c1,2002,0113:30:00,29 ,37.57352,319.7778, 133.472,79.78601
sgpcmbeC1.c1,2002,0114:30:00,29 ,36.32331,271.0674,124.8419,73.37526
sgpcmbeC1.c1,2002,0115:30:00,29 ,20.10812,191.8556,95.35068,52.42499
sgpcmbeC1.c1,2002,0116:30:00,29 , 10.0541,108.4035,56.55428,24.76382
sgpcmbeC1.c1,2002,0117:30:00,29 ,0.393603,32.33624,11.34479,6.769266
sgpcmbeC1.c1,2002,0118:30:00,29 ,       0,0.012259,0.000423,0.002276
sgpcmbeC1.c1,2002,0119:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0121:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0122:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0123:30:00,17 ,       0,       0,       0,       0