Dataseries 1
     
Frequency, Hz -    SPL,dB (total, track, wheel, sleeper)
50 	NaN	38.88 	NaN	45 
63 	44.76 	37.51 	36.54 	43 
79 	44.82 	37.85 	39.92 	42 
100 	47.00 	39.11 	44.40 	42 
126 	50.56 	42.06 	47.92 	46 
158 	56.86 	50.25 	49.00 	55 
200 	59.46 	52.25 	48.93 	58 
251 	61.17 	53.92 	48.96 	60 
316 	64.17 	58.27 	50.47 	63 
398 	71.03 	65.97 	55.77 	69 
501 	76.40 	74.42 	62.77 	71 
631 	70.34 	68.89 	62.88 	61 
794 	67.87 	65.45 	63.84 	53 
1000 	72.97 	69.27 	70.36 	57 
1259 	71.02 	70.21 	63.04 	51 
1585 	64.16 	63.38 	56.05 	44 
1995 	65.91 	65.75 	51.44 	40 
2512 	67.02 	66.61 	56.44 	40 
3162 	59.11 	58.72 	48.37 	30 
3981 	57.15 	56.88 	44.91 	28 
5012 	49.82 	49.75 	31.81 	21 



