Pulling speed and altitude

[chanbennet]

What are the attributes to parse out speed from GPRMC?

 newdata[0:6] == "$GPRMC":
            newmsg=pynmea2.parse(newdata)
            lat=newmsg.latitude
            lng=newmsg.longitude
            spd=newmsg.spd_over_grnd_kmph
            gps_data['latitude'] = lat
            gps_data['longitude'] = lng
            gps_data['speed'] = spd
            gps = "Latitude=" + str(lat) + "and Longitude=" + str(lng) + "speed" + str(spd)
            print(gps)
            

Returns
spd=newmsg.spd_over_grnd_kmph
File "/home/pi/.local/lib/python2.7/site-packages/pynmea2/nmea.py", line 155, in getattr
raise AttributeError(name)
AttributeError: spd_over_grnd_kmph

[Knio]

These fields are defined here: https://github.com/Knio/pynmea2/blob/master/pynmea2/types/talker.py#L357