datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 3:30:00,19 ,       0,0.215185,0.011326,0.049367
sgpcmbeC1.c1,2007,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 6:30:00,26 ,       0,0.997236,0.074823,0.264419
sgpcmbeC1.c1,2007,02 7:30:00,28 ,0.002356,  32.728,9.538748,11.10575
sgpcmbeC1.c1,2007,02 8:30:00,28 ,0.009937,195.1669,84.86697,72.77043
sgpcmbeC1.c1,2007,02 9:30:00,28 ,0.015348,383.7968, 186.349,152.5459
sgpcmbeC1.c1,2007,0210:30:00,28 , 0.06333,551.7919,290.4026,225.0529
sgpcmbeC1.c1,2007,0211:30:00,28 ,0.310959,673.5632, 378.729,275.5341
sgpcmbeC1.c1,2007,0212:30:00,28 ,0.129196,718.2794,411.6728,299.7201
sgpcmbeC1.c1,2007,0213:30:00,28 ,0.052689,687.3444,395.8186,272.5288
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.016609,595.3709,307.2228,241.7271
sgpcmbeC1.c1,2007,0215:30:00,28 ,0.000481, 445.489, 204.357, 175.711
sgpcmbeC1.c1,2007,0216:30:00,28 , 0.02224, 270.023,109.6383,104.7932
sgpcmbeC1.c1,2007,0217:30:00,28 ,       0,94.35614, 26.8366,31.48565
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,2.504391,0.300862,0.617828
sgpcmbeC1.c1,2007,0219:30:00,23 ,       0,1.540532,0.092463,0.338454
sgpcmbeC1.c1,2007,0220:30:00,21 ,       0,0.542673,0.033366,0.121673
sgpcmbeC1.c1,2007,0221:30:00,19 ,       0,0.216104,0.019013,0.058165
sgpcmbeC1.c1,2007,0222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0223:30:00,20 ,       0,       0,       0,       0