datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,11 0:30:00,28 ,       0,0.345707,0.012347,0.065332
sgpcmbeC1.c1,1998,11 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 2:30:00,28 ,       0,0.063363,0.002263,0.011975
sgpcmbeC1.c1,1998,11 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 4:30:00,29 ,       0,0.039247,0.001353,0.007288
sgpcmbeC1.c1,1998,11 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,11 6:30:00,29 ,       0,0.364477,0.031836,0.087184
sgpcmbeC1.c1,1998,11 7:30:00,29 ,3.724923,48.47413,16.36478,8.975682
sgpcmbeC1.c1,1998,11 8:30:00,29 , 10.2326,125.1006,55.05492,24.78794
sgpcmbeC1.c1,1998,11 9:30:00,29 ,27.45858,211.4074, 89.0707,50.32412
sgpcmbeC1.c1,1998,1110:30:00,29 ,36.43203,298.1674,106.8123,66.82808
sgpcmbeC1.c1,1998,1111:30:00,29 ,45.62983, 307.963,112.6685,67.97523
sgpcmbeC1.c1,1998,1112:30:00,29 ,47.44692,268.4485,110.6756,67.10693
sgpcmbeC1.c1,1998,1113:30:00,29 ,49.24231,267.6726,108.9971,62.08004
sgpcmbeC1.c1,1998,1114:30:00,29 ,49.97939,196.2029,101.1603,51.38016
sgpcmbeC1.c1,1998,1115:30:00,29 ,32.40474,140.5238,73.90237,34.56286
sgpcmbeC1.c1,1998,1116:30:00,29 ,12.88216,66.64536,36.79236,17.08647
sgpcmbeC1.c1,1998,1117:30:00,30 ,       0,6.876333,3.152113, 2.07134
sgpcmbeC1.c1,1998,1118:30:00,29 ,       0, 1.43639,0.053749,0.266887
sgpcmbeC1.c1,1998,1119:30:00,29 ,       0,0.711551,0.025666,0.132054
sgpcmbeC1.c1,1998,1120:30:00,29 ,       0, 0.39091,0.014925,0.072729
sgpcmbeC1.c1,1998,1121:30:00,29 ,       0,0.067426,0.004442,0.016629
sgpcmbeC1.c1,1998,1122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1123:30:00,28 ,       0,0.667282,0.024577, 0.12602