No guarante on the following infos, but maybe interessting for some:

GSM Tab:
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ARFCN - Absolute Radio Frequency Channel Number, the Channel nummber you can use
to calculate the frequency

LAC - Location Area Code

RAC - Region Area Code

MCC - Mobile Country Code, the country the network is located

MNC - Mobile Network Code, the used network provider

Cell ID - Well...guess the what...yup...the ID of your current cell your logged into.

RSSI - Received Signal Strength Indication, tells you how strong the
signal is you receive. The higher the better

Neighboring Cells:
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An overview of the next 4 cells you have around you with their IDs and the corresponding Signal Strength.
If you cell has a higher RSSI as your current cell...the phone will change the cell.

TPL -

RQ - Reception Quality, the bit error rate of the signal. The lower the better.

TA - Timing Advance, tells you !indirect! the distance from your phone to the
base station. One unit is a distance of about 550m in the optimal case when
there are no reflections of the signal. Maximum is a value of 63 - so
35.000m/35 km to the base station.

FH - ????

LRN - Local Roaming Number or Local Routing Number (????)

TMSI - Temporary Mobile Subscriber Identity. Will be used instead of the
IMSI in a Location Area and one Provider. Theoretically you can have
a little bit fun with it and switch your identity in a netwrok and
location area...if you can controll it and know other active TMSIs.

PLUV - Periodic Location Update Variable. Tells you a timing value when the phone
is going to send an location update to the provider.

AMR Tab:
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I guess AMR is for Adaptive Multi Rate codec informations. The codec informations used at the
moment like bitrate, Full Rate, Enhanced Full Rate etc... No Infos on that one. :(

GPRS Tab:
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RXLEV - Reception Level / like RSSI
No more infos on the rest.