datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 7:30:00,31 ,       0,11.12422,4.095524,2.841588
sgpcmbeC1.c1,1999,01 8:30:00,31 ,2.669169,34.47108,13.25109,7.386388
sgpcmbeC1.c1,1999,01 9:30:00,31 ,1.402259,46.23592,17.16852,12.02237
sgpcmbeC1.c1,1999,0110:30:00,31 ,1.042872,56.22347,23.05567,16.65256
sgpcmbeC1.c1,1999,0111:30:00,31 ,0.789449,70.43616,25.30529,19.34186
sgpcmbeC1.c1,1999,0112:30:00,31 ,0.937486,111.8269,33.17665,28.45891
sgpcmbeC1.c1,1999,0113:30:00,31 ,1.205491,89.21366,24.23025,22.83454
sgpcmbeC1.c1,1999,0114:30:00,31 ,2.421238,89.32159,22.53626,21.74269
sgpcmbeC1.c1,1999,0115:30:00,31 ,1.665861,59.11696, 15.3445,14.15263
sgpcmbeC1.c1,1999,0116:30:00,31 ,2.519827,34.22569,12.32339,8.519102
sgpcmbeC1.c1,1999,0117:30:00,31 ,       0,21.31265,9.409174,5.089466
sgpcmbeC1.c1,1999,0118:30:00,31 ,       0, 0.67209, 0.02168,0.120711
sgpcmbeC1.c1,1999,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0120:30:00,31 ,       0,0.375747,0.012121,0.067486
sgpcmbeC1.c1,1999,0121:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0123:30:00,28 ,       0,       0,       0,       0