datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,04 0:30:00,30 ,       0,0.160713,0.005357,0.029342
sgpcmbeC1.c1,1997,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 4:30:00,30 ,       0,0.052405,0.001747,0.009568
sgpcmbeC1.c1,1997,04 5:30:00,30 ,       0,5.666976,0.913656,1.637217
sgpcmbeC1.c1,1997,04 6:30:00,30 ,0.447501,122.3807,46.13477,38.07566
sgpcmbeC1.c1,1997,04 7:30:00,30 ,7.196405,318.6263,164.2125,105.5573
sgpcmbeC1.c1,1997,04 8:30:00,30 ,32.13474,536.5975,303.5424,175.8815
sgpcmbeC1.c1,1997,04 9:30:00,30 ,32.82937,722.0999,425.7995, 244.451
sgpcmbeC1.c1,1997,0410:30:00,30 ,91.08836,876.4418,521.8863,296.0097
sgpcmbeC1.c1,1997,0411:30:00,30 ,58.31629,943.3425,603.9688,324.5616
sgpcmbeC1.c1,1997,0412:30:00,30 ,33.03522,977.8967,621.8722,335.8887
sgpcmbeC1.c1,1997,0413:30:00,30 ,99.96751,959.2462,631.5902,307.3226
sgpcmbeC1.c1,1997,0414:30:00,30 ,33.99608, 851.196,541.4182,293.3454
sgpcmbeC1.c1,1997,0415:30:00,30 ,39.54386,750.4811,444.3412,259.6048
sgpcmbeC1.c1,1997,0416:30:00,30 ,20.44471,  528.47,309.1524,192.8687
sgpcmbeC1.c1,1997,0417:30:00,30 ,16.24221,317.0198,175.0197, 108.379
sgpcmbeC1.c1,1997,0418:30:00,30 ,2.655532,109.2618,49.42779,33.57323
sgpcmbeC1.c1,1997,0419:30:00,30 ,       0,4.045392, 0.96158,1.232337
sgpcmbeC1.c1,1997,0420:30:00,30 ,       0,0.151303,0.011549, 0.03753
sgpcmbeC1.c1,1997,0421:30:00,30 ,       0,0.059837,0.001995,0.010925
sgpcmbeC1.c1,1997,0422:30:00,30 ,       0,0.159614, 0.00532,0.029141
sgpcmbeC1.c1,1997,0423:30:00,30 ,       0,0.159168,0.005306, 0.02906