Many of these functions depend on the variables in the configuration being assigned and correct.

• ts_getBeaufort(speed) return the beaufort scale number and description for a given wind speed.
• ts_windDirection(degrees) return the 16 point compass point given the vane rotation.
• ts_dryDays() return the number of days since last rainfall.
• ts_wetDays() return the number of days since last dry day.
• ts_sinceWetDry() return a string quoting the number of days since last wet or dry day.
• ts_rainRate() return the current rain rate in units/hr.
• ts_totalRainfallPeriod(period, offset) return the amount of rain fallen between time-offest and time-offset-period.
• ts_returnSunrise() return the sunrise time.
• ts_returnSunset() return the sunset time.
• ts_cloudCoverIsDark() returns TRUE or FALSE, telling if it is dark. This is based on the sunrise/sunset times and the cloud sensor offset specified in the configuration.
• ts_cloudCoverCheck() returns the level of cloudiness, based on the defined sensor ID and levels defined in the configuration file.
• ts_readAllTimeMax(logid) read the all time maximum value of the given log ID.
• ts_readAllTimeMin(logid) read the all time minimum value of the given log ID.
• ts_currentTrend(logid,period=3600) return the current trend (U/D/S), of the specified log ID in the given period.
• ts_getAverage(logid,period=86400,offset=0) return the average value of the specified log ID in the given period.
• ts_getMaxMin(logid,period=86400,offset=0) return the maximum and minimum values of the specified log ID in the given period.
• ts_readCurrent(logid,dp=NULL) return the current value of the specified log ID, rounded to the optional number of decimal places.
• ts_startImage(x,y) start an image ready to add widgets, of the specified x and y dimensions.
• ts_completeImage() complete the started image - this means sending image headers and the data, before exiting the script.

A couple of other functions are included that are not part of the class, but may be useful.

• imagestringcentered(img,font,cy,text,color) a wrapper for imagestring, that will centre the text on the page at the given y coordinate.
• secondsSinceMidnight() return the number of seconds passed since midnight last night.