From page 144 in Mastering Glazes.
Step 1 provides time for all remaining or residual water in glaze and clay to evaporate.
Step 3 approaches the final temperature more slowly and gives the glaze and body time to finalize their interaction with each other.
Step 5: Cooling more slow through the 1025 down to 800 range is important if you want multiple phases or crystal (and associated matte) effects to develop.
55°C/hr to 105C
99°F/hr to 221F
200°C/hr to 1080C
360°F/hr to 1976F
85°C/hr to 1200C
153°F/hr to 2192F
275°C/hr to 1000C
495°F/hr to 1832F
70°C/hr to 760C
126°F/hr to 1400F
Freefall°C/hr to 30C
0°F/hr to 86F
Start temperature assumed: 25°C or 75°F
100°F is 37°C, but 100 fahrenheit degrees is 55 celsius degrees, that is an important distinction to understand the above temperature conversions.