Human body temperature to give the most accurate assessment of core body temperature, particularly in hypothermia. In the early 2000s, ingestible thermistors in capsule form were produced, allowing the temperature inside the digestive tract to be transmitted to an external receiver; one study found that these were comparable in accuracy to rectal temperature measurement. In the 19th century, most books quoted "blood heat" as 98 °F, until a study published the mean (but not the variance) of a large sample as . Subsequently that mean was widely quoted as "37 °C or 98.4 °F" until editors realised 37 °C is closer to 98.6
Centigrade 232 spell with Hawkwind from 1976 that he had become more recognised as being a singer and front-man of a rock band, but he continued actively writing poems and plays during this time. In 1977 a collection of his poems were compiled and published by Quasar books, the title being (allegedly) the temperature at which writing paper burns "signifying the writer destroying his rough drafts". This is an allusion to the Ray Bradbury novel "Fahrenheit 451" and possibly the film thereof, 451°F being equivalent to 232 Centigrade. Some of the poems are pieces he had performed with Hawkwind during the "Space