diff --git a/demo/plate1n/data/sample-x383-y250-signal-Txx.csv b/demo/plate1n/data/sample-x383-y250-signal-Txx.csv
new file mode 100644
index 0000000..8639376
--- /dev/null
+++ b/demo/plate1n/data/sample-x383-y250-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
+-3.685274805320659652e-06
+-1.959237852133810520e-05
+-5.889566455152817070e-05
+-1.023433287627995014e-04
+-1.248386834049597383e-04
+-1.147728398791514337e-04
+-2.932742063421756029e-05
+1.305857003899291158e-04
+3.610148269217461348e-04
+6.177262403070926666e-04
+7.967769051901996136e-04
+7.722909213043749332e-04
+4.808796511497348547e-04
+-1.019684423226863146e-04
+-8.404460968449711800e-04
+-1.548495609313249588e-03
+-1.984216272830963135e-03
+-1.974596874788403511e-03
+-1.459739636629819870e-03
+-5.659121088683605194e-04
+4.590231692418456078e-04
+1.313250511884689331e-03
+1.793047529645264149e-03
+1.825946499593555927e-03
+1.515964046120643616e-03
+1.063476549461483955e-03
+6.667855195701122284e-04
+4.335148551035672426e-04
+3.381114802323281765e-04
+2.497212553862482309e-04
+2.430610402370803058e-05
+-4.042108485009521246e-04
+-9.774313075467944145e-04
+-1.520632999017834663e-03
+-1.809338806197047234e-03
+-1.685382216237485409e-03
+-1.132272998802363873e-03
+-2.854599442798644304e-04
+6.132132839411497116e-04
+1.297949696891009808e-03
+1.586302299983799458e-03
+1.432615448720753193e-03
+9.237951016984879971e-04
+2.311856515007093549e-04
+-4.219969268888235092e-04
+-8.639876614324748516e-04
+-1.017076079733669758e-03
+-8.813009480945765972e-04
+-5.484868888743221760e-04
+-1.390469988109543920e-04
+2.425511775072664022e-04
+4.881324712187051773e-04
+5.565683823078870773e-04
+4.931066650897264481e-04