Added telegraf configs
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influxMeasurements.md
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influxMeasurements.md
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This is a collection of all the metrics collected by **gpsdMeasurement.py** script.
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# Table of contents
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* [gps_fix](#gps_fix)
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* [mode](#mode)
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* [lat](#lat)
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* [lon](#lon)
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* [alt](#alt)
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* [alt_msl](#alt_msl)
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* [alt_hae](#alt_hae)
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* [speed](#speed)
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* [climb](#climb)
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* [track](#track)
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* [magtrack](#magtrack)
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* [magvar](#magvar)
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* [ept](#ept)
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* [epx](#epx)
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* [epy](#epy)
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* [epv](#epv)
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* [eph](#eph)
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* [sep](#sep)
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* [ecefpAcc](#ecefpacc)
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* [ecefvAcc](#ecefvacc)
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* [leapseconds](#leapseconds)
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* [fix_valid](#fix_valid)
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* [fix_3d](#fix_3d)
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* [gps_sky](#gps_sky)
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* [nSat](#nsat)
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* [uSat](#usat)
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* [sat_used_ratio](#sat_used_ratio)
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* [gdop](#gdop)
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* [hdop](#hdop)
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* [pdop](#pdop)
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* [tdop](#tdop)
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* [vdop](#vdop)
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* [xdop](#xdop)
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* [ydop](#ydop)
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* [gps_visible](#gps_visible)
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* [gps_used](#gps_used)
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* [sbas_visible](#sbas_visible)
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* [sbas_used](#sbas_used)
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* [galileo_visible](#galileo_visible)
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* [galileo_used](#galileo_used)
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* [beidou_visible](#beidou_visible)
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* [beidou_used](#beidou_used)
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* [qzss_visible](#qzss_visible)
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* [qzss_used](#qzss_used)
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* [glonass_visible](#glonass_visible)
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* [glonass_used](#glonass_used)
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* [unknown_visible](#unknown_visible)
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* [unknown_used](#unknown_used)
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* [avg_signal_visible](#avg_signal_visible)
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* [avg_signal_used](#avg_signal_used)
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* [max_signal](#max_signal)
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* [gps_pps](#gps_pps)
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* [offset_ns](#offset_ns)
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* [precision_exp](#precision_exp)
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* [present](#present)
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## gps_fix
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This measurement is the current navigation solution from the latest TPV message.
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Basically: where am I, what kind of fix do I have, and how confident is the receiver?
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### mode
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Fix type.
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Usually:
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1 = no fix
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2 = 2D fix
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3 = 3D fix
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### lat
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Latitude in decimal degrees.
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### lon
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Longitude in decimal degrees.
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### alt
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Altitude in meters.This is effectively the same as mean sea level altitude.
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### alt_msl
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Altitude above mean sea level, in meters.
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### alt_hae
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Altitude above the ellipsoid, in meters.
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### speed
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Current ground speed, in meters per second.
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### climb
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Vertical speed, in meters per second. Positive means climbing, negative means descending.
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### track
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Course over ground in degrees.
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### magtrack
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Magnetic course over ground in degrees.
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### magvar
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Magnetic variation in degrees.
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### ept
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Estimated timestamp error, in seconds. This is gpsd estimate of uncertainty for the reported time.
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### epx
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Estimated longitude-related horizontal uncertainty, in meters.
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### epy
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Estimated latitude-related horizontal uncertainty, in meters.
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### epv
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Estimated vertical uncertainty, in meters.
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### eph
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Estimated horizontal position uncertainty, in meters.
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### sep
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Estimated spherical error or 3D position uncertainty, in meters.
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### ecefpAcc
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Estimated ECEF position accuracy, in meters.
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### ecefvAcc
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Estimated ECEF velocity accuracy, in meters per second.
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### leapseconds
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Current leap-second offset between GPS time and UTC.
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### fix_valid
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Boolean derived by the script.
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true if mode >= 2.
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### fix_3d
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Boolean derived by the script.
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true if mode == 3.
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## gps_sky
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This measurement comes from the latest SKY message.
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It says: how good is the sky view, how many satellites are visible and used, and how good is the geometry?
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### nSat
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Number of satellites visible or reported.
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### uSat
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Number of satellites currently used in the navigation solution.
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### sat_used_ratio
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Derived value: uSat / nSat.
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Shows how many visible satellites are actually being used.
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### gdop
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Geometric dilution of precision.
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Overall combined geometry quality. Lower is better.
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### hdop
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Horizontal dilution of precision. Lower is better.
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### pdop
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Position dilution of precision. Lower is better.
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### tdop
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Time dilution of precision. Lower is better.
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### vdop
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Vertical dilution of precision. Lower is better.
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### xdop
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Dilution of precision in the X direction. Lower is better.
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### ydop
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Dilution of precision in the Y direction. Lower is better.
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### gps_visible
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How many GPS satellites were listed.
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### gps_used
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How many GPS satellites were actually used in the fix.
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### sbas_visible
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How many SBAS satellites were listed.
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### sbas_used
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How many SBAS satellites were used in the fix.
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### galileo_visible
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How many Galileo satellites were listed.
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### galileo_used
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How many Galileo satellites were used in the fix.
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### beidou_visible
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How many BeiDou satellites were listed.
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### beidou_used
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How many BeiDou satellites were used in the fix.
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### qzss_visible
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How many QZSS satellites were listed.
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### qzss_used
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How many QZSS satellites were used in the fix.
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### glonass_visible
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How many GLONASS satellites were listed.
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### glonass_used
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How many GLONASS satellites were used in the fix.
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### unknown_visible
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How many satellites had an unknown gnssid.
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### unknown_used
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How many unknown-constellation satellites were used.
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### avg_signal_visible
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Average signal strength across all visible satellites, based on ss.
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### avg_signal_used
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Average signal strength across satellites actually used in the fix.
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### max_signal
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Maximum ss value seen among visible satellites.
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## gps_pps
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This measurement comes from the latest PPS message.
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What is says: is PPS present, and what is the current timing offset between the PPS event and the host clock timestamp?
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### offset_ns
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Derived value in nanoseconds.
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Calculated by the script as:
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(clock_sec * 1e9 + clock_nsec) - (real_sec * 1e9 + real_nsec)
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The difference between the kernel or host timestamp and the PPS event timestamp.
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A negative value means the host timestamp is slightly earlier than the PPS reference.
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A positive value means it is slightly later.
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### precision_exp
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Precision exponent reported by gpsd for the PPS source.
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### present
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Boolean derived by the script.
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Always true when a PPS message was received and exported.
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