Table 1 Mean (± SE), vaginal (Tvag) and subcutaneous (Tsub) temperatures (°C), during the day or night, and maximum, minimum and MESOR (midline estimating statistic of rhythm; i.e., the average value around which the variable fluctuates), amplitude (the difference between the peak and the mean value of a wave), and acrophase (the time of peak activity) of three non-pregnant adult Rasa Aragonesa ewes that were surgically implanted with a subcutaneous bio-logger programmed to record subcutaneous T every 30 min and an intravaginal sponge with a programmed bio-logger to monitor vaginal T every 5 min

From: Bio-loggers inserted in intravaginal sponges, or subcutaneously, as tools to measure body temperature