diff --git a/paper/source/prepare/paperdiff_parse.py b/paper/source/prepare/paperdiff_parse.py
index 50e5bb4c..4ff54014 100644
--- a/paper/source/prepare/paperdiff_parse.py
+++ b/paper/source/prepare/paperdiff_parse.py
@@ -1,29 +1,42 @@
 import csv
+import os
 import re
 
+DATADIR='../data'
+PARSER = '^page (?P<page>[0-9]+) has (?P<pixels>[0-9]+) pixels that differ$'
+PARSED_LIST = [
+    ['Page', 'Pixels Differ [N]', 'Differing Pixels Proportion', 'Date', 'Environment'],
+    ]
+
+
 # This should be dynamically/empirically determined, perhaps with a blank page of a colour which is certain to not appear in the document.
 # For now we rely on the fact that we explicitly rasterize at 300dpi in the diff generation script (this could be different);
 # and that we know this is outputted to a4 paper (this could also be different).
 pixels_total = 8699840
 
-parser = "^page (?P<page>[0-9]+) has (?P<pixels>[0-9]+) pixels that differ$"
-
-parsed_list = [
-    ["Page", "Pixels Differ [N]", "Differing Pixels Proportion"],
-    ]
-with open("../data/paperdiff.log") as f:
-    for line in f:
-        print(line)
-        try:
-            m = re.match(parser, line).groupdict()
-        except AttributeError:
-            continue
-        pixels_differ_proportion = int(m["pixels"]) / pixels_total
-        pixels_differ_proportion = float("{:.5f}".format(pixels_differ_proportion))
-        #pixels_differ_percent = pixels_differ_proportion * 100
-        # Adding 1 to the page number to obtain the same numbering as in the document itself.
-        parsed_list.append([int(m["page"])+1, m["pixels"], pixels_differ_proportion])
+for i in os.listdir(DATADIR):
+    if not i[-3:] == 'log':
+        continue
+    print(f'Processing paperdiff log file `{i}`...')
+    execution_metadata = re.match('^paperdiff_(?P<environment>.+)_(?P<date>.+)\..*$', i).groupdict()
+    with open(os.path.join(DATADIR,i)) as f:
+        for line in f:
+            try:
+                m = re.match(PARSER, line).groupdict()
+            except AttributeError:
+                continue
+            pixels_differ_proportion = int(m['pixels']) / pixels_total
+            pixels_differ_proportion = float('{:.5f}'.format(pixels_differ_proportion))
+            #pixels_differ_percent = pixels_differ_proportion * 100
+            # Adding 1 to the page number to obtain the same numbering as in the document itself.
+            PARSED_LIST.append([
+                int(m['page'])+1,
+                m['pixels'],
+                pixels_differ_proportion,
+                execution_metadata['date'],
+                execution_metadata['environment'],
+                ])
 
-with open("../data/paperdiff.csv", "w", newline="") as f:
+with open('../data/paperdiff.csv', 'w', newline='') as f:
     writer = csv.writer(f)
-    writer.writerows(parsed_list)
+    writer.writerows(PARSED_LIST)