datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,29 ,       0,260.2945,17.56702,49.75234
sgpcmbeC1.c1,2006,12 1:30:00,29 ,       0,76.05994,10.16134, 20.3999
sgpcmbeC1.c1,2006,12 2:30:00,28 ,       0,475.2103,25.02397,89.47823
sgpcmbeC1.c1,2006,12 3:30:00,28 ,       0,254.8083,15.67108, 48.4392
sgpcmbeC1.c1,2006,12 4:30:00,28 ,       0,466.1191, 24.7832,87.92513
sgpcmbeC1.c1,2006,12 5:30:00,29 ,       0,224.9824,23.50907,49.07449
sgpcmbeC1.c1,2006,12 6:30:00,29 ,       0,467.1962,40.55457,110.2726
sgpcmbeC1.c1,2006,12 7:30:00,28 ,       0,205.9647,25.26782,53.31696
sgpcmbeC1.c1,2006,12 8:30:00,28 ,       0,215.0122,25.57391,51.41481
sgpcmbeC1.c1,2006,12 9:30:00,28 ,       0,162.4265,28.84185,52.52916
sgpcmbeC1.c1,2006,1210:30:00,29 ,       0,326.5091, 28.4846,68.68248
sgpcmbeC1.c1,2006,1211:30:00,30 ,       0,124.6256,17.74721,31.26045
sgpcmbeC1.c1,2006,1212:30:00,30 ,       0,221.0708,24.10415,50.28718
sgpcmbeC1.c1,2006,1213:30:00,31 ,       0,113.7449,19.06246,31.57896
sgpcmbeC1.c1,2006,1214:30:00,31 ,       0,85.38741,12.44785,22.07358
sgpcmbeC1.c1,2006,1215:30:00,31 ,       0,115.5026,13.25492,25.66057
sgpcmbeC1.c1,2006,1216:30:00,31 ,       0,133.8562,15.39643,31.45063
sgpcmbeC1.c1,2006,1217:30:00,31 ,       0,164.7976,19.30464,39.86675
sgpcmbeC1.c1,2006,1218:30:00,31 ,       0,295.4948,23.43657,60.31346
sgpcmbeC1.c1,2006,1219:30:00,31 ,       0,497.3499,38.28431, 101.785
sgpcmbeC1.c1,2006,1220:30:00,30 ,       0, 325.868,26.04914,70.52671
sgpcmbeC1.c1,2006,1221:30:00,29 ,       0,342.3202, 19.6037,65.14064
sgpcmbeC1.c1,2006,1222:30:00,29 ,       0,283.4167,16.02205,54.31698
sgpcmbeC1.c1,2006,1223:30:00,30 ,       0,376.7366,27.39349,85.56223