datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,11 0:30:00,28 ,       0,0.066118,0.002361,0.012495
sgpcmbeC1.c1,1998,11 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 2:30:00,28 ,       0,0.041306,0.001475,0.007806
sgpcmbeC1.c1,1998,11 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 4:30:00,29 ,       0,0.019481,0.000672,0.003618
sgpcmbeC1.c1,1998,11 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 6:30:00,29 ,       0,0.000427,0.000015,0.000079
sgpcmbeC1.c1,1998,11 7:30:00,29 , 0.00858,38.53701,9.430756,11.06187
sgpcmbeC1.c1,1998,11 8:30:00,29 ,0.001461, 191.822,75.68643,69.45525
sgpcmbeC1.c1,1998,11 9:30:00,29 ,0.016357,351.9041,157.3414,142.3393
sgpcmbeC1.c1,1998,1110:30:00,29 ,0.002022,472.3758,225.0632,204.4592
sgpcmbeC1.c1,1998,1111:30:00,29 ,0.027313,544.1432, 258.481,235.2913
sgpcmbeC1.c1,1998,1112:30:00,29 ,0.027126, 559.981,270.8923, 241.165
sgpcmbeC1.c1,1998,1113:30:00,29 ,0.009163,511.9625,243.9306,217.5542
sgpcmbeC1.c1,1998,1114:30:00,29 ,0.034576,407.3299,190.9563,167.4026
sgpcmbeC1.c1,1998,1115:30:00,29 ,0.019043,262.6104,121.5974,102.8891
sgpcmbeC1.c1,1998,1116:30:00,29 ,       0,97.73634,37.10237,37.04154
sgpcmbeC1.c1,1998,1117:30:00,30 ,       0,4.085979,0.705425,1.083102
sgpcmbeC1.c1,1998,1118:30:00,29 ,       0,0.189806,0.007634,0.035524
sgpcmbeC1.c1,1998,1119:30:00,29 ,       0,0.021037,0.001393,0.005213
sgpcmbeC1.c1,1998,1120:30:00,29 ,       0,0.017078,0.000589,0.003171
sgpcmbeC1.c1,1998,1121:30:00,29 ,       0,0.041891,0.001881,0.008046
sgpcmbeC1.c1,1998,1122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1123:30:00,28 ,       0, 0.22501,0.009077,0.042675