The tipper is broken (temporarily?). This disrupts the recording of the weather data and impacts the calculation of the relative humidity, because the program that collects these data, TIPSUCK, is stuck waiting for the next tipper reading. So I've resurrected the version of the program that doesn't read the tipper data. Instead it wakes up every 30 min, declares that tau=0, and writes the weather data into the file that CONTROL reads. If FRANKENHEIM reboots, the normal version of the program will be started. To go back to the special version, do the following: Login to FRANKENHEIM as SMTSYS. (N.B. the normal SMTSYS windows are on KRONEN.) SHOW SYS/OWN=VISITOR This will print a line with TIPSUCK in it. Using the Pid, , in this line STOP/ID= Finally, @TIPSUCK0 Example: SMTSYS> SHOW SYS/OWN=VISITOR OpenVMS V6.2 on node FRANKE 1-JUN-2000 16:15:31.52 Uptime 6 22:52:51 Pid Process Name State Pri I/O CPU Page flts Pages 2340125B TIPSUCK HIB 4 400 0 00:00:04.89 299 339 SMTSYS> STOP/ID=2340125B SMTSYS> @TIPSUCK0