with the hbii u00ae a reg istered trademark of marsco manufacturing llc in the examples below a ge spectra oven model jbp35b4wh was used during temperature cycle the temperatures were measured once each minute with a pico technology model tc 08 datatlogger using type k thermocouples temperatures as a function of time were measured for 3 self cleaning cycles with heat barrier glass in the oven in the as received configuration with reference to fig1 this configuration was as follows the ambient temperature maximum temperature in the oven cavity and the maximum temperature on surface 6 for each run were as follows temperature location run 1 run 2 run 3 average ambient 30 97 31 97 31 84 31 59 oven cavity 475 66 474 88 475 18 475 24 surface 6 83 80 85 12 84 68 84 53 an average of the temperature versus time for the 3 self cleaning cycles is shown as curve 1 in fig2 temperature as a function of time was measured for 6 self cleaning cycles with reference to fig1 the heat barrier glass in the oven was in the configuration as follows the ambient temperature maximum temperature in the oven cavity and the maximum temperature on surface 6 in degrees celsius for each run were as follows temperature location run 1 run 2 run 3 run 4 run 5 run6 average ambient u2014 32 17 31 60 31 75 31 04.