fix bugs in c code, update interpolation, etc
diff --git a/wally/suits/job.py b/wally/suits/job.py
index 1e4c457..5cb27b5 100644
--- a/wally/suits/job.py
+++ b/wally/suits/job.py
@@ -65,10 +65,15 @@
         # time interval, in seconds, when test was running on all nodes
         self.reliable_info_range = None  # type: Tuple[int, int]
 
+
         # all job parameters, both from suite file and config file
         self.vals = OrderedDict()  # type: Dict[str, Any]
 
     @property
+    def reliable_info_range_s(self) -> Tuple[int, int]:
+        return (self.reliable_info_range[0] // 1000, self.reliable_info_range[1] // 1000)
+
+    @property
     def storage_id(self) -> str:
         """unique string, used as key in storage"""
         return "{}_{}".format(self.summary, self.idx)