What do these two METAR codes mean? METAR YPJT 070300Z AUTO 10010KT 9999 // NCD 27/10 Q1018 RMK
RF00.0/000.0

In the above METAR report, I have two questions:

What does the fraction &quot;27/10&quot; mean?
What does &quot;RF00.0/000.0&quot; also mean?
The term 27/10 is the temperature (27°C) and dew point (10°C).
The RF term in the remark section is used to indicate the accumulated rainfall (in this case 0, so no rain):

What is the meaning of the RF group in METAR/SPECI and TTF?
This group reports rainfall in the last ten minutes and accumulated rainfall since 0900 local. For example, RF02.2/024.4 reports that 2.2mm of rainfall has fallen in the 10 minutes prior to the report time; and 24.4mm has fallen since 0900 local.

(Australian Government - Bureau of Meteorology)