datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,04 0:30:00,30 ,       0,0.094568,0.003152,0.017266
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 ,       0,0.050289,0.001676,0.009181
sgpcmbeC1.c1,1997,04 5:30:00,30 ,       0,4.396234,0.810922,  1.3613
sgpcmbeC1.c1,1997,04 6:30:00,30 , 0.43278,85.13256,27.64651,19.60046
sgpcmbeC1.c1,1997,04 7:30:00,30 ,7.098061,197.1366,77.49267,38.30279
sgpcmbeC1.c1,1997,04 8:30:00,30 ,31.55852,285.1478,136.9529,75.00856
sgpcmbeC1.c1,1997,04 9:30:00,30 ,32.82937,377.8158, 174.813,94.77902
sgpcmbeC1.c1,1997,0410:30:00,30 ,73.17207,433.8415,206.7405,122.4328
sgpcmbeC1.c1,1997,0411:30:00,30 ,57.53549,558.4342,238.3496,145.5634
sgpcmbeC1.c1,1997,0412:30:00,30 ,32.97484,502.6497,252.3815,141.9034
sgpcmbeC1.c1,1997,0413:30:00,30 ,82.21932,477.5456,248.2649,128.9361
sgpcmbeC1.c1,1997,0414:30:00,30 ,33.99608,381.6496,211.0958,102.7209
sgpcmbeC1.c1,1997,0415:30:00,30 ,39.54386,364.4325,168.3862,89.96134
sgpcmbeC1.c1,1997,0416:30:00,30 , 20.4206,206.3126,104.7429,43.98378
sgpcmbeC1.c1,1997,0417:30:00,30 ,16.20953,144.4909,74.23541, 32.2896
sgpcmbeC1.c1,1997,0418:30:00,30 ,2.642449,58.04624,27.62379,15.07387
sgpcmbeC1.c1,1997,0419:30:00,30 ,       0,3.555834,0.832302,1.032794
sgpcmbeC1.c1,1997,0420:30:00,30 ,       0,0.124693,0.005984,0.024551
sgpcmbeC1.c1,1997,0421:30:00,30 ,       0,0.050493,0.001683,0.009219
sgpcmbeC1.c1,1997,0422:30:00,30 ,       0,0.138656,0.004622,0.025315
sgpcmbeC1.c1,1997,0423:30:00,30 ,       0,0.119616,0.003987,0.021839