--- a
+++ b/data/17-80.txt
@@ -0,0 +1,464 @@
+4.6733	0.9533
+5.6333	0.9600
+6.5900	0.9567
+7.5600	0.9700
+8.5100	0.9500
+9.4900	0.9800
+10.4233	0.9333
+11.3567	0.9333
+12.2933	0.9367
+13.1967	0.9033
+14.1233	0.9267
+15.0600	0.9367
+15.9567	0.8967
+16.8700	0.9133
+17.7800	0.9100
+18.6700	0.8900
+19.5633	0.8933
+20.4400	0.8767
+21.3467	0.9067
+22.2533	0.9067
+23.1367	0.8833
+24.0500	0.9133
+24.9433	0.8933
+25.8400	0.8967
+26.7067	0.8667
+27.5867	0.8800
+28.4567	0.8700
+29.3500	0.8933
+30.2433	0.8933
+31.1367	0.8933
+32.0333	0.8967
+32.9500	0.9167
+33.8567	0.9067
+34.7433	0.8867
+35.6500	0.9067
+36.5533	0.9033
+37.4467	0.8933
+38.3367	0.8900
+39.2167	0.8800
+40.1200	0.9033
+41.0433	0.9233
+41.9233	0.8800
+42.8367	0.9133
+43.7233	0.8867
+44.6067	0.8833
+45.4933	0.8867
+46.3967	0.9033
+47.2767	0.8800
+48.1733	0.8967
+49.0867	0.9133
+50.0167	0.9300
+50.8967	0.8800
+51.8067	0.9100
+52.7033	0.8967
+53.6233	0.9200
+54.5467	0.9233
+55.4500	0.9033
+56.3567	0.9067
+57.2867	0.9300
+58.2133	0.9267
+59.1467	0.9333
+60.0700	0.9233
+60.9933	0.9233
+61.9033	0.9100
+62.8367	0.9333
+63.7667	0.9300
+64.6933	0.9267
+65.6033	0.9100
+66.5400	0.9367
+67.4933	0.9533
+68.4500	0.9567
+69.3833	0.9333
+70.3433	0.9600
+71.3000	0.9567
+72.2400	0.9400
+73.1633	0.9233
+74.0933	0.9300
+75.0233	0.9300
+75.9433	0.9200
+76.8533	0.9100
+77.7767	0.9233
+78.7100	0.9333
+79.6567	0.9467
+80.5600	0.9033
+81.4900	0.9300
+82.3900	0.9000
+83.3300	0.9400
+84.2000	0.8700
+85.1300	0.9300
+86.0700	0.9400
+87.0433	0.9733
+87.9933	0.9500
+88.9200	0.9267
+89.8500	0.9300
+90.8000	0.9500
+91.7267	0.9267
+92.6800	0.9533
+93.6167	0.9367
+94.5600	0.9433
+95.5133	0.9533
+96.4833	0.9700
+97.4300	0.9467
+98.3933	0.9633
+99.3233	0.9300
+100.2733	0.9500
+101.2367	0.9633
+102.2133	0.9767
+103.1300	0.9167
+104.0633	0.9333
+104.9933	0.9300
+105.9200	0.9267
+106.8367	0.9167
+107.7800	0.9433
+108.7100	0.9300
+109.6300	0.9200
+110.5400	0.9100
+111.4500	0.9100
+112.3633	0.9133
+113.3000	0.9367
+114.2533	0.9533
+115.1867	0.9333
+116.1367	0.9500
+117.0900	0.9533
+118.0300	0.9400
+118.9667	0.9367
+119.9067	0.9400
+120.8367	0.9300
+121.8067	0.9700
+122.7300	0.9233
+123.6700	0.9400
+124.5967	0.9267
+125.5033	0.9067
+126.4200	0.9167
+127.3400	0.9200
+128.2333	0.8933
+129.1400	0.9067
+130.0733	0.9333
+131.0000	0.9267
+131.8967	0.8967
+132.8100	0.9133
+133.7100	0.9000
+134.6133	0.9033
+135.5433	0.9300
+136.4533	0.9100
+137.3600	0.9067
+138.2767	0.9167
+139.1900	0.9133
+140.1100	0.9200
+140.9833	0.8733
+141.8900	0.9067
+142.8200	0.9300
+143.7433	0.9233
+144.6400	0.8967
+145.5500	0.9100
+146.4667	0.9167
+147.3833	0.9167
+148.2900	0.9067
+149.1967	0.9067
+150.1100	0.9133
+150.9933	0.8833
+151.8900	0.8967
+152.7967	0.9067
+153.6967	0.9000
+154.5767	0.8800
+155.4833	0.9067
+156.3733	0.8900
+157.2833	0.9100
+158.1700	0.8867
+159.0733	0.9033
+159.9533	0.8800
+160.8633	0.9100
+161.7767	0.9133
+162.7000	0.9233
+163.6233	0.9233
+164.5167	0.8933
+165.4567	0.9400
+166.3500	0.8933
+167.2467	0.8967
+168.1667	0.9200
+169.0633	0.8967
+169.9800	0.9167
+170.8900	0.9100
+171.8033	0.9133
+172.7167	0.9133
+173.6333	0.9167
+174.5633	0.9300
+175.5033	0.9400
+176.4100	0.9067
+177.3600	0.9500
+178.2867	0.9267
+179.2300	0.9433
+180.1533	0.9233
+181.0833	0.9300
+182.0100	0.9267
+182.9133	0.9033
+183.8267	0.9133
+184.7233	0.8967
+185.6067	0.8833
+186.4900	0.8833
+187.4033	0.9133
+188.2967	0.8933
+189.2100	0.9133
+190.1267	0.9167
+191.0333	0.9067
+191.9500	0.9167
+192.8267	0.8767
+193.6933	0.8667
+194.5800	0.8867
+195.4733	0.8933
+196.3533	0.8800
+197.2500	0.8967
+198.1233	0.8733
+198.9967	0.8733
+199.9133	0.9167
+200.8133	0.9000
+201.7100	0.8967
+202.6367	0.9267
+203.5733	0.9367
+204.4800	0.9067
+205.4033	0.9233
+206.3167	0.9133
+207.2300	0.9133
+208.1433	0.9133
+209.0500	0.9067
+209.9400	0.8900
+210.8633	0.9233
+211.7767	0.9133
+212.6367	0.8600
+213.5333	0.8967
+214.4233	0.8900
+215.3200	0.8967
+216.2133	0.8933
+217.1133	0.9000
+218.0433	0.9300
+218.9467	0.9033
+219.8933	0.9467
+220.8567	0.9633
+221.7800	0.9233
+222.6933	0.9133
+223.5833	0.8900
+224.5433	0.9600
+225.4500	0.9067
+226.3633	0.9133
+227.2600	0.8967
+228.1600	0.9000
+229.0533	0.8933
+229.9300	0.8767
+230.8500	0.9200
+231.7600	0.9100
+232.6800	0.9200
+233.6167	0.9367
+234.5000	0.8833
+235.3833	0.8833
+236.2700	0.8867
+237.1567	0.8867
+238.0233	0.8667
+238.8933	0.8700
+239.7433	0.8500
+240.6333	0.8900
+241.5267	0.8933
+242.4133	0.8867
+243.3033	0.8900
+244.2167	0.9133
+245.1300	0.9133
+246.0467	0.9167
+246.9600	0.9133
+247.8533	0.8933
+248.7567	0.9033
+249.6500	0.8933
+250.5500	0.9000
+251.4700	0.9200
+252.3900	0.9200
+253.3067	0.9167
+254.2433	0.9367
+255.1633	0.9200
+256.0633	0.9000
+256.9967	0.9333
+257.9300	0.9333
+258.8733	0.9433
+259.7933	0.9200
+260.7367	0.9433
+261.7033	0.9667
+262.6433	0.9400
+263.5767	0.9333
+264.4967	0.9200
+265.4300	0.9333
+266.3233	0.8933
+267.2700	0.9467
+268.1967	0.9267
+269.1433	0.9467
+270.0567	0.9133
+270.9967	0.9400
+271.8933	0.8967
+272.8233	0.9300
+273.7200	0.8967
+274.6500	0.9300
+275.5733	0.9233
+276.4933	0.9200
+277.4033	0.9100
+278.3500	0.9467
+279.2700	0.9200
+280.1867	0.9167
+281.1233	0.9367
+282.0800	0.9567
+282.9900	0.9100
+283.9233	0.9333
+284.8533	0.9300
+285.7900	0.9367
+286.7233	0.9333
+287.6500	0.9267
+288.5900	0.9400
+289.5500	0.9600
+290.5067	0.9567
+291.4667	0.9600
+292.4333	0.9667
+293.3900	0.9567
+294.3400	0.9500
+295.3167	0.9767
+296.2800	0.9633
+297.2367	0.9567
+298.2167	0.9800
+299.1500	0.9333
+300.1033	0.9533
+301.0633	0.9600
+302.0233	0.9600
+302.9600	0.9367
+303.9033	0.9433
+304.8467	0.9433
+305.7967	0.9500
+306.7333	0.9367
+307.6767	0.9433
+308.6100	0.9333
+309.5700	0.9600
+310.5333	0.9633
+311.4967	0.9633
+312.4433	0.9467
+313.3933	0.9500
+314.3200	0.9267
+315.2700	0.9500
+316.2267	0.9567
+317.1600	0.9333
+318.1400	0.9800
+319.0900	0.9500
+320.0333	0.9433
+320.9533	0.9200
+321.8700	0.9167
+322.7833	0.9133
+323.7100	0.9267
+324.6267	0.9167
+325.5667	0.9400
+326.5067	0.9400
+327.4467	0.9400
+328.3733	0.9267
+329.2700	0.8967
+330.2000	0.9300
+331.1167	0.9167
+332.0567	0.9400
+332.9800	0.9233
+333.9033	0.9233
+334.8433	0.9400
+335.7800	0.9367
+336.7067	0.9267
+337.6367	0.9300
+338.5567	0.9200
+339.4733	0.9167
+340.4200	0.9467
+341.3467	0.9267
+342.2733	0.9267
+343.2133	0.9400
+344.1600	0.9467
+345.0967	0.9367
+346.0100	0.9133
+346.9100	0.9000
+347.8500	0.9400
+348.7700	0.9200
+349.7067	0.9367
+350.6600	0.9533
+351.5800	0.9200
+352.5167	0.9367
+353.4200	0.9033
+354.3633	0.9433
+355.2633	0.9000
+356.1700	0.9067
+357.0500	0.8800
+357.9867	0.9367
+358.9267	0.9400
+359.8500	0.9233
+360.7900	0.9400
+361.7433	0.9533
+362.7033	0.9600
+363.6700	0.9667
+364.6300	0.9600
+365.5900	0.9600
+366.5267	0.9367
+367.4767	0.9500
+368.4067	0.9300
+369.3467	0.9400
+370.2733	0.9267
+371.1967	0.9233
+372.1300	0.9333
+373.0433	0.9133
+373.9700	0.9267
+374.8867	0.9167
+375.7900	0.9033
+376.7100	0.9200
+377.6500	0.9400
+378.5700	0.9200
+379.4767	0.9067
+380.4067	0.9300
+381.3400	0.9333
+382.2600	0.9200
+383.1867	0.9267
+384.1000	0.9133
+385.0667	0.9667
+386.0167	0.9500
+386.9533	0.9367
+387.8967	0.9433
+388.8733	0.9767
+389.8233	0.9500
+390.7800	0.9567
+391.7167	0.9367
+392.6500	0.9333
+393.5900	0.9400
+394.5300	0.9400
+395.5100	0.9800
+396.4400	0.9300
+397.3967	0.9567
+398.3933	0.9967
+399.3500	0.9567
+400.2367	0.8867
+401.1667	0.9300
+402.1633	0.9967
+403.1100	0.9467
+404.0133	0.9033
+404.9533	0.9400
+405.8700	0.9167
+406.7633	0.8933
+407.6800	0.9167
+408.6467	0.9667
+409.6267	0.9800
+410.5433	0.9167
+411.4500	0.9067
+412.3667	0.9167
+413.2833	0.9167
+414.1833	0.9000
+415.1167	0.9333
+416.0533	0.9367
+416.9767	0.9233
+417.8967	0.9200
+418.8033	0.9067
+419.7333	0.9300
+420.6267	0.8933
+421.5833	0.9567
+422.5067	0.9233
+423.4533	0.9467
+424.3867	0.9333
+425.3467	0.9600
+426.2700	0.9233
+427.2367	0.9667
+428.1733	0.9367
+429.1300	0.9567
+430.0733	0.9433
+431.0267	0.9533
+436.4267	5.4000