diff --git a/demo/plate1n/data/sample-x320-y239-signal-Txx.csv b/demo/plate1n/data/sample-x320-y239-signal-Txx.csv
new file mode 100644
index 0000000..4c099b4
--- /dev/null
+++ b/demo/plate1n/data/sample-x320-y239-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
+-9.646384999909966008e-31
+-1.313570792623095058e-27
+-1.102462894545536091e-24
+-5.801809677426773947e-22
+-1.940686692213988806e-19
+-4.168090645633046808e-17
+-5.786207423570319253e-15
+-5.207390508382703231e-13
+-3.034926129852344445e-11
+-1.138821481561080873e-09
+-2.719587754995700379e-08
+-4.055530666846607346e-07
+-3.670790192700223997e-06
+-1.939581488841213286e-05
+-5.738116306019946933e-05
+-9.597875759936869144e-05
+-1.107145071728155017e-04
+-9.710771701065823436e-05
+-1.502431041444651783e-05
+1.294645771849900484e-04
+3.305476857349276543e-04
+5.481626139953732491e-04
+6.907965871505439281e-04
+6.458243587985634804e-04
+3.800009144470095634e-04
+-1.220272097270935774e-04
+-7.284826133400201797e-04
+-1.283606747165322304e-03
+-1.601337688043713570e-03
+-1.562509336508810520e-03
+-1.139275147579610348e-03
+-4.582679248414933681e-04
+2.830817538779228926e-04
+8.667784277349710464e-04
+1.175025245174765587e-03
+1.189433853141963482e-03
+1.012473949231207371e-03
+7.904344238340854645e-04
+6.358952959999442101e-04
+5.853785551153123379e-04
+5.831100861541926861e-04
+5.213751574046909809e-04
+3.163486253470182419e-04
+-4.206299490761011839e-05
+-4.796506545972079039e-04
+-8.707226952537894249e-04
+-1.085496041923761368e-03
+-1.052643405273556709e-03
+-7.984619005583226681e-04
+-4.261604335624724627e-04
+-6.718866643495857716e-05
+1.663365255808457732e-04
+2.365282125538215041e-04
+1.775517594069242477e-04
+6.529129314003512263e-05
+-2.599252547952346504e-05
+-2.952995782834477723e-05
+6.024800313753075898e-05
+1.808473170967772603e-04
+2.763215452432632446e-04
+2.846662828233093023e-04
+1.906616671476513147e-04
+4.035339952679350972e-05
+-1.240058918483555317e-04
+-2.453685738146305084e-04
+-2.445277641527354717e-04