datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.512792,0.018314,0.096909
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0,0.416361, 0.01487,0.078685
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 ,       0,1.813373,0.291531,0.590636
sgpcmbeC1.c1,1997,11 7:30:00,30 ,2.171438,28.97616,12.84026,6.909442
sgpcmbeC1.c1,1997,11 8:30:00,30 ,3.133591,34.75724,14.43433,8.867364
sgpcmbeC1.c1,1997,11 9:30:00,30 ,1.866403,40.79501,14.53711, 12.3754
sgpcmbeC1.c1,1997,1110:30:00,30 ,1.123374,59.49972,21.11475,18.59746
sgpcmbeC1.c1,1997,1111:30:00,30 ,0.680934,74.62688,26.13322,23.55928
sgpcmbeC1.c1,1997,1112:30:00,30 , 0.80705,120.5594,28.00279,29.42782
sgpcmbeC1.c1,1997,1113:30:00,30 , 0.71675,82.10955,  23.676,20.45336
sgpcmbeC1.c1,1997,1114:30:00,30 ,1.772556,60.85836,22.91998,16.64052
sgpcmbeC1.c1,1997,1115:30:00,30 ,2.359945,39.65112,14.73074,10.79936
sgpcmbeC1.c1,1997,1116:30:00,30 ,1.541495,39.87094,14.96855,10.09496
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,15.32714,5.735524,3.661022
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 ,       0,0.178302,0.005943,0.032553
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0,0.313193, 0.01044,0.057181
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,0.172481, 0.00616,0.032596
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0