datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,04 0:30:00,19 ,       0,0.388188,0.020431,0.089056
sgpcmbeC1.c1,1999,04 1:30:00,19 ,       0,1.406352,0.074019,0.322639
sgpcmbeC1.c1,1999,04 2:30:00,19 ,       0,1.658753,0.087303,0.380544
sgpcmbeC1.c1,1999,04 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 5:30:00,19 ,       0,2.822255,0.605976, 0.83042
sgpcmbeC1.c1,1999,04 6:30:00,19 ,2.825247,25.20156,14.07145,5.472198
sgpcmbeC1.c1,1999,04 7:30:00,19 ,1.286466, 36.6653, 16.6037,11.13618
sgpcmbeC1.c1,1999,04 8:30:00,18 ,1.045387,83.05286, 20.1485, 24.2788
sgpcmbeC1.c1,1999,04 9:30:00,18 ,1.345716,97.33449,21.91523, 26.4184
sgpcmbeC1.c1,1999,0410:30:00,18 ,0.796664,111.0509,30.05778,33.51257
sgpcmbeC1.c1,1999,0411:30:00,18 ,0.610269,98.59311,28.13509,32.01622
sgpcmbeC1.c1,1999,0412:30:00,18 ,1.284179,176.5903,36.30605,45.35486
sgpcmbeC1.c1,1999,0413:30:00,18 ,0.502573,76.85477,31.75789,25.32594
sgpcmbeC1.c1,1999,0414:30:00,18 ,1.268099,128.7942,40.92606,39.26157
sgpcmbeC1.c1,1999,0415:30:00,18 ,1.168636,99.00226,33.03826,31.04949
sgpcmbeC1.c1,1999,0416:30:00,18 ,1.322951, 102.347,27.88966, 27.4227
sgpcmbeC1.c1,1999,0417:30:00,18 , 2.85512,53.48893,20.37838, 14.3831
sgpcmbeC1.c1,1999,0418:30:00,18 ,3.446624,50.70017,19.91725, 10.7714
sgpcmbeC1.c1,1999,0419:30:00,18 ,       0,2.499626,0.878392,0.935556
sgpcmbeC1.c1,1999,0420:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0421:30:00,18 ,       0,0.861834, 0.04788,0.203136
sgpcmbeC1.c1,1999,0422:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0423:30:00,18 ,       0,       0,       0,       0