diff --git a/src/logger.c b/src/logger.c
index a698a0d..9ed974e 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -56,18 +56,19 @@ int main (int argc, char *argv [])
   char buffer[255];
   int power;
   time_t interval;
-
+  struct timespec power_ts;
   while(1){
     interval=INTERVAL(__loginterval);
     *logfilepath='\0';
     sprintf(logfilepath,"%s/%ld",__logdir,interval);
     logptr=fopen(logfilepath,"w");
-    fprintf(logptr,"timestamp,power\n");
+    fprintf(logptr,"timestamp,ns,power\n");
     // Log current interval
     while((TIMESTAMP()-interval)<__loginterval){
       fgets(buffer,255,regptr);
       power=atoi(buffer);
-      fprintf(logptr,"%ld,%d\n",TIMESTAMP(),power);
+      clock_gettime(CLOCK_REALTIME,&power_ts);
+      fprintf(logptr,"%d,%ld,%d\n",power_ts.tv_sec,power_ts.tv_nsec,power);
       fseek(regptr,0,SEEK_SET);
       sleep(1);
       printf("Tick\n"); fflush(stdout);