datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,02 0:30:00,26 ,       0,0.385195, 0.01825,0.076861
sgpcmbeC1.c1,1999,02 1:30:00,25 ,       0,0.050252, 0.00201, 0.01005
sgpcmbeC1.c1,1999,02 2:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 4:30:00,26 ,       0,0.083056,0.003194,0.016289
sgpcmbeC1.c1,1999,02 5:30:00,26 ,       0,0.309311,0.014008,0.061183
sgpcmbeC1.c1,1999,02 6:30:00,26 ,       0,0.059231,0.002278,0.011616
sgpcmbeC1.c1,1999,02 7:30:00,26 ,2.185523,62.86785,21.82515, 16.9624
sgpcmbeC1.c1,1999,02 8:30:00,26 ,15.59791,257.8858,139.0853,76.31618
sgpcmbeC1.c1,1999,02 9:30:00,26 ,35.45606,456.0004,283.4326,142.0812
sgpcmbeC1.c1,1999,0210:30:00,26 ,103.3886,620.0095,424.1155,176.5252
sgpcmbeC1.c1,1999,0211:30:00,26 ,109.3281, 727.135,528.8899,182.1712
sgpcmbeC1.c1,1999,0212:30:00,26 ,111.7582,772.5388,586.9104,163.7472
sgpcmbeC1.c1,1999,0213:30:00,26 ,148.9946,749.2689, 568.885,169.7151
sgpcmbeC1.c1,1999,0214:30:00,26 ,43.58125,662.8201,494.5701,169.7983
sgpcmbeC1.c1,1999,0215:30:00,26 ,17.44202,522.3336,387.7731,129.2198
sgpcmbeC1.c1,1999,0216:30:00,26 ,18.03249,334.1425,232.2034,83.37939
sgpcmbeC1.c1,1999,0217:30:00,26 ,4.944117,137.2329,76.70728,37.15138
sgpcmbeC1.c1,1999,0218:30:00,26 ,       0,8.793717,2.924338,2.970913
sgpcmbeC1.c1,1999,0219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0221:30:00,26 ,       0,0.103733,0.008402,0.024904
sgpcmbeC1.c1,1999,0222:30:00,26 ,       0,0.368092,0.019289,0.075794
sgpcmbeC1.c1,1999,0223:30:00,26 ,       0,       0,       0,       0