diff --git a/Htmldocs/release_notes.html b/Htmldocs/release_notes.html
index a5b13859..977b3aab 100644
--- a/Htmldocs/release_notes.html
+++ b/Htmldocs/release_notes.html
@@ -11,6 +11,14 @@
     <b>This page in other languages:</b>
     <br><a href=http://www.apneaboard.com/wiki/index.php/OSCAR_Release_Notes>http://www.apneaboard.com/wiki/index.php/OSCAR_Release_Notes</a></p>
     <p>
+    <b>Changes and fixes in OSCAR v1.3.1-beta-?</b>
+    <br>Portions of OSCAR are © 2019-2021 by
+    <i>The OSCAR Team</i></p>
+    <ul>
+      <li>[fix] Fix missing oximetry and motion waveforms on Overview pages.</li>
+      <li>[fix] Fix rare problem of minimum pressure shown as zero on Overview and Statistics pages.</li>
+    </ul>
+    <p>
     <b>Changes and fixes in OSCAR v1.3.1-beta-1</b>
     <br>Portions of OSCAR are © 2019-2021 by
     <i>The OSCAR Team</i></p>
@@ -29,7 +37,6 @@
       <li>[new] Add 95% flow limitation to Therapy Efficacy section on Statistics page.</li>
       <li>[new] Add date range option to Statistics page.</li>
       <li>[new] Improve appearance and operation of event types and graphs comboboxes on Daily and Overview pages.</li>
-      <li>[fix] Fix missing oximetry and motion waveforms on Overview pages.</li>
       <li>[fix] Correct SleepStyle machines sometimes identified as Icon machines.</li>
       <li>[fix] Improve event flag position in flow graph for DV6 machines.</li>
       <li>[fix] --datadir option now allows fully qualified paths on Mac and Linux.</li>
diff --git a/oscar/Graphs/MinutesAtPressure.cpp b/oscar/Graphs/MinutesAtPressure.cpp
index 09b79257..0f3a7c85 100644
--- a/oscar/Graphs/MinutesAtPressure.cpp
+++ b/oscar/Graphs/MinutesAtPressure.cpp
@@ -232,7 +232,11 @@ EventDataType msecToMinutes(EventDataType value) {
 }
 
 EventDataType getSetting(Session * sess,ChannelID code) {
-    auto setting=sess->settings[code];
+    if (!sess->settings.contains(code)) {
+        qWarning() << "MinutesAtPressure could not find channel" << code;
+        return -1;
+    }
+    auto setting=sess->settings.value(code);/*[code]; */
     enum schema::DataType datatype = schema::channel[code].datatype();
     if (!( datatype == schema::DEFAULT || datatype == schema::DOUBLE )) return -1;
     return setting.toDouble();
@@ -714,22 +718,24 @@ void RecalcMAP::run()
 
     for ( int idx=0; idx<sessions.size() ; idx++ ) {
         auto & sess = sessions[idx];
-        IPAP.updateBucketsPerPressure(sess);
-        EPAP.updateBucketsPerPressure(sess);
-        IPAP.eventLists = sess->eventlist.value(ipapcode);
-        EPAP.eventLists = sess->eventlist.value(epapcode);
+        if (sess->type() == MT_CPAP) {
+            IPAP.updateBucketsPerPressure(sess);
+            EPAP.updateBucketsPerPressure(sess);
+            IPAP.eventLists = sess->eventlist.value(ipapcode);
+            EPAP.eventLists = sess->eventlist.value(epapcode);
 
-        updateTimes(IPAP);
-        updateTimes(EPAP);
+            updateTimes(IPAP);
+            updateTimes(EPAP);
 
-        EventDataType value = getSetting(sess, CPAP_PressureMin);
-        if (value >=0.1 && minP >value)  minP=value;
-        value = getSetting(sess, CPAP_PressureMax);
-        if (value >=0.1 && maxP <value)  maxP=value;
+            EventDataType value = getSetting(sess, CPAP_PressureMin);
+            if (value >=0.1 && minP >value)  minP=value;
+            value = getSetting(sess, CPAP_PressureMax);
+            if (value >=0.1 && maxP <value)  maxP=value;
 
-        updateEvents(sess,IPAP);
+            updateEvents(sess,IPAP);
 
-        if (m_quit)  break;
+            if (m_quit)  break;
+        }
 
     }
     if (minP>maxP) minP=maxP;
diff --git a/oscar/SleepLib/day.cpp b/oscar/SleepLib/day.cpp
index aeb2f976..bdc5f7d3 100644
--- a/oscar/SleepLib/day.cpp
+++ b/oscar/SleepLib/day.cpp
@@ -263,7 +263,7 @@ EventDataType Day::settings_max(ChannelID code)
     EventDataType value;
 
     for (auto & sess : sessions) {
-        if (sess->enabled()) {
+        if (sess->enabled() && sess->s_machtype != MT_JOURNAL) {
             value = sess->settings.value(code, min).toFloat();
             if (value > max) {
                 max = value;
@@ -280,7 +280,7 @@ EventDataType Day::settings_min(ChannelID code)
     EventDataType value;
 
     for (auto & sess : sessions) {
-        if (sess->enabled()) {
+        if (sess->enabled() && sess->s_machtype != MT_JOURNAL) {
             value = sess->settings.value(code, max).toFloat();
             if (value < min) {
                 min = value;