battery / systemwarning is not a binary

[chk2902]

my eco8's status is right now:

{"balancechargerequest":0,"chargecurrentlimit":0,"cyclecount":1087,"dischargecurrentlimit":88.8,"fullchargecapacity":114.766,"fullchargecapacitywh":5876.019,"maximumcelltemperature":21.35,"maximumcellvoltage":3.545,"maximumcellvoltagenum":0,"maximummodulecurrent":0.017,"maximummoduledcvoltage":56.532,"maximummoduletemperature":-273.15,"minimumcelltemperature":20.05,"minimumcellvoltage":3.516,"minimumcellvoltagenum":0,"minimummodulecurrent":-0.135,"minimummoduledcvoltage":56.524,"minimummoduletemperature":-273.15,"nominalmoduledcvoltage":51.2,"relativestateofcharge":99,"remainingcapacity":114.765,"systemalarm":0,"systemcurrent":3.638,"systemdcvoltage":56.528,"systemstatus":57,"systemtime":175940132,"systemwarning":8,"usableremainingcapacity":109.027}

Do you have any idea what the warning numbers ("systemwarning") (and state numbers ("systemstate)) mean?