datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 7:30:00,29 ,       0,9.489332,4.038107,2.627943
sgpcmbeC1.c1,1998,01 8:30:00,29 ,3.307802,41.95905,14.20882, 9.70205
sgpcmbeC1.c1,1998,01 9:30:00,29 ,2.611985,39.04805, 13.7728,10.30857
sgpcmbeC1.c1,1998,0110:30:00,29 ,1.373526,60.12916,19.69997,16.85102
sgpcmbeC1.c1,1998,0111:30:00,29 ,0.594544,57.33066,20.91244,15.45888
sgpcmbeC1.c1,1998,0112:30:00,29 ,0.653576,96.85074,24.60746,21.93478
sgpcmbeC1.c1,1998,0113:30:00,29 ,1.152817,79.82072,24.25253,23.00212
sgpcmbeC1.c1,1998,0114:30:00,29 ,1.023394, 67.2344,23.58884,19.67508
sgpcmbeC1.c1,1998,0115:30:00,29 ,2.054587,49.70465,17.88946,13.11661
sgpcmbeC1.c1,1998,0116:30:00,29 ,3.290812,38.20362, 14.0846,10.39807
sgpcmbeC1.c1,1998,0117:30:00,29 ,1.604473,18.23424,8.855429, 4.73333
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,0.502461,0.017945,0.094956
sgpcmbeC1.c1,1998,0119:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0120:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0122:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0123:30:00,27 ,       0,       0,       0,       0