Sony PCG-XG28 Primary User Manual page 123

41ºF to 95ºF (+5ºC to 35ºC)
(Temperature gradient less than 18ºF/10ºC/hour)
20% to 80% (not condensed) when that humidity is less
than 65% at 95°F (35°C) (hygrometer reading of less
than 84°F (29°C))
-4°F to 140°F (-20°C to 60°C) (temperature gradient less
than 18°F(10°C)/hour)
10% to 90% (not condensed) when that humidity is
less than 20% at 140°F (60°C) (hygrometer reading of
less than 95°F (35°C))