datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,04 0:30:00,24 ,       0,43.22464,3.896819, 8.92336
sgpcmbeC1.c1,2001,04 1:30:00,23 ,       0,53.46093,5.076677,11.46788
sgpcmbeC1.c1,2001,04 2:30:00,20 ,       0,14.95634, 2.89738,3.708337
sgpcmbeC1.c1,2001,04 3:30:00,20 ,       0,13.40114,2.726654,3.682567
sgpcmbeC1.c1,2001,04 4:30:00,21 ,       0,44.28751,4.521136, 9.47777
sgpcmbeC1.c1,2001,04 5:30:00,20 ,       0,14.54605,4.003065,4.469767
sgpcmbeC1.c1,2001,04 6:30:00,20 ,       0, 55.4712, 8.58831,13.99162
sgpcmbeC1.c1,2001,04 7:30:00,20 ,       0, 134.044,13.70173,30.98302
sgpcmbeC1.c1,2001,04 8:30:00,25 ,       0,227.2234,25.43963,55.58322
sgpcmbeC1.c1,2001,04 9:30:00,26 ,       0,238.4895,30.85654,56.48169
sgpcmbeC1.c1,2001,0410:30:00,26 ,       0, 309.428,27.74271,65.96443
sgpcmbeC1.c1,2001,0411:30:00,26 ,       0,204.6072,25.84338, 49.7383
sgpcmbeC1.c1,2001,0412:30:00,26 ,       0,314.7511,36.20349,77.25373
sgpcmbeC1.c1,2001,0413:30:00,26 ,       0,108.5139,18.74668,31.37199
sgpcmbeC1.c1,2001,0414:30:00,27 ,       0,255.7066,18.86165,49.31727
sgpcmbeC1.c1,2001,0415:30:00,26 ,       0,53.25005,8.735035, 14.0062
sgpcmbeC1.c1,2001,0416:30:00,26 ,       0,41.83826,8.327346,10.86532
sgpcmbeC1.c1,2001,0417:30:00,26 ,0.049435, 21.0943,5.742081,6.704527
sgpcmbeC1.c1,2001,0418:30:00,26 ,       0,38.93155,5.882363,9.666396
sgpcmbeC1.c1,2001,0419:30:00,26 ,0.136204,70.53671,7.751569,14.71809
sgpcmbeC1.c1,2001,0420:30:00,26 ,       0, 172.751,16.50803,36.61811
sgpcmbeC1.c1,2001,0421:30:00,26 ,       0,75.11903,10.49414,19.95969
sgpcmbeC1.c1,2001,0422:30:00,26 ,       0,104.9665,7.701848,20.59433
sgpcmbeC1.c1,2001,0423:30:00,26 ,       0,121.8194,10.40012,27.32904