diff --git a/demo/plate1n/data/sample-x135-y270-signal-Txx.csv b/demo/plate1n/data/sample-x135-y270-signal-Txx.csv
new file mode 100644
index 0000000..ca1fe56
--- /dev/null
+++ b/demo/plate1n/data/sample-x135-y270-signal-Txx.csv
@@ -0,0 +1,99 @@
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+0.000000000000000000e+00
+-1.021995668624638462e-37
+-4.275182955154424835e-34
+-9.646384059514485350e-31
+-1.313570696326597839e-27
+-1.102462598722696633e-24
+-5.801806143329918557e-22
+-1.940684495015486712e-19
+-4.168085351677126469e-17
+-5.786218011482159931e-15
+-5.207476702455415829e-13
+-3.035125276107386583e-11
+-1.139056737819998943e-09
+-2.721168357311398722e-08
+-4.061757863382808864e-07
+-3.685275032694335096e-06
+-1.959238761628512293e-05
+-5.889601015951484442e-05
+-1.023490476654842496e-04
+-1.248739572474732995e-04
+-1.146930662798695266e-04
+-2.775104985630605370e-05
+1.351950922980904579e-04
+3.652012092061340809e-04
+6.194725865498185158e-04
+7.933593587949872017e-04
+7.598562515340745449e-04
+4.593863268382847309e-04
+-1.320754527114331722e-04
+-8.713763090781867504e-04
+-1.561814569868147373e-03
+-1.968198921531438828e-03
+-1.916651497595012188e-03
+-1.363851595669984818e-03
+-4.512133309617638588e-04
+5.610065418295562267e-04
+1.364272669889032841e-03
+1.764579210430383682e-03
+1.713137957267463207e-03
+1.338264672085642815e-03
+8.634813129901885986e-04
+4.912001895718276501e-04
+3.177827456966042519e-04
+2.958489058073610067e-04
+2.697919553611427546e-04
+8.799072384135797620e-05
+-3.091510734520852566e-04
+-8.456874638795852661e-04
+-1.330225262790918350e-03
+-1.547650201246142387e-03
+-1.365575240924954414e-03
+-8.112618234008550644e-04
+-6.357188976835459471e-05
+6.224941462278366089e-04
+1.015465240925550461e-03
+1.012841821648180485e-03
+6.708844448439776897e-04
+1.646576856728643179e-04
+-2.977132971864193678e-04
+-5.332899745553731918e-04
+-4.769704537466168404e-04
+-1.972284662770107388e-04
+1.722738961689174175e-04
+4.615849757101386786e-04
+5.528706824406981468e-04
+4.387237422633916140e-04
+1.577109942445531487e-04
+-1.785255153663456440e-04
+-4.215403751004487276e-04