datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.004369,0.000156,0.000826
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0,0.071104,0.002539,0.013437
sgpcmbeC1.c1,1997,11 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 6:30:00,30 ,       0,0.038405, 0.00277,0.009052
sgpcmbeC1.c1,1997,11 7:30:00,30 ,0.008045,54.49801,11.72408,  17.106
sgpcmbeC1.c1,1997,11 8:30:00,30 ,0.005241,215.5656,66.44005,78.02265
sgpcmbeC1.c1,1997,11 9:30:00,30 ,0.010494,376.0734,143.6631,144.8028
sgpcmbeC1.c1,1997,1110:30:00,30 ,0.096249,501.6607,215.6376,197.5754
sgpcmbeC1.c1,1997,1111:30:00,30 ,0.389305,574.6904,283.7477,218.6451
sgpcmbeC1.c1,1997,1112:30:00,30 ,0.188393,583.5462,270.3485,217.0869
sgpcmbeC1.c1,1997,1113:30:00,30 ,0.032936,532.1393, 250.259,191.2191
sgpcmbeC1.c1,1997,1114:30:00,30 ,0.177239,414.8652,197.0805,155.2596
sgpcmbeC1.c1,1997,1115:30:00,30 ,0.048561,298.2622,118.9475,106.8384
sgpcmbeC1.c1,1997,1116:30:00,30 ,0.035584,116.9392,40.32409,42.16648
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,7.949718, 1.39894,1.827874
sgpcmbeC1.c1,1997,1118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1120:30:00,30 ,       0,0.124295,0.004143,0.022693
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0,0.216289, 0.00721,0.039489
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,0.317052,0.011323,0.059917
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0