#1 Excel tutorial on the net. This example illustrates the ISERROR function in Excel. 1. For example, Excel displays the #DIV/0! error when a formula tries to divide a number by 0. The ISERROR function checks whether a value is an error and returns TRUE or FALSE. 2. Use the IF and the ISERROR function.
Ticks are also capable of surviving winter temperatures when they are able to find a host to feed from or a warm location to hide in during the coldest weather months. Generally, adult ticks will still be a threat when temperatures hover around 45 degrees Fahrenheit.
From what you have shared the issue now is persisting fatigue and low grade fevers becoming symptomatic (chills and feeling ill) at 99.3 degrees---hope I am tracking you correctly. It does sound like your concerns are being heard given the checks for Lyme's disease and screening for autoimmune disorders.