Daily Rain Reports

Hello all and I hope you all had a good Christmas.

Why does my daily reports for rain always show on the daily and monthly line as 0 mm yet at the end of the month, for each day there was rain, it shows the days rain was there along with how many mm of rain.

http://www.fairfieldweather.info/December2013.htm

at day 25 this is what the data shows

Rainfall for month = 0.0 mm
Rainfall for year = 715.0 mm
Rainfall for day = 0.0 mm

Yet at the bottom of the page its shows

08.0 mm on day 25

This is the same for any other day that rain has fallen.

Anyone have any idea on this issue ???