Update O2permeation.json

Updated the PO measurement parameters.

Author: Kempe

pvdeg/data/O2permeation.json

@@ -36,10 +36,10 @@
         "Fickian": true,
         "Ead": 29.43112031,
         "Do": 0.129061678,
-        "Eas": 32.3137806,
-        "So": 87.81142774,
-        "Eap": 61.7449009,
-        "Po": 97917899126
+        "Eas": 16.6314948252219,
+        "So": 0.136034525059804,
+        "Eap": 49.1083457348515,
+        "Po": 528718258.338532
     },
     "OX004": {
         "name": "AAA polyamide backsheet",