99/101/103 are the orbit positions (slots). (c)/(s) are Nationwide Beams (c) and Spot Beams (s). Spot beams are for locals and only can be received in certain areas while nationwide beams are across the whole conus.
On 99/103 I usually shoot for mid-high 80s - low 90s. 101 you can go for high 90s easily.
Note that some of the Transponders (the separate numbers in the table) will always be a bit lower than others. For example I have a few 94 and 95 numbers on my 101 even though some others are 100. If some are the highest you can get on an orbital position (99/101/103) generally you will not get the others too much higher. Note also that the spotbeams will many times have some very low ones (I have a 35 and a 40) as they are ones you do not necessarily get in your area.
On 99/103 I usually shoot for mid-high 80s - low 90s. 101 you can go for high 90s easily.
Note that some of the Transponders (the separate numbers in the table) will always be a bit lower than others. For example I have a few 94 and 95 numbers on my 101 even though some others are 100. If some are the highest you can get on an orbital position (99/101/103) generally you will not get the others too much higher. Note also that the spotbeams will many times have some very low ones (I have a 35 and a 40) as they are ones you do not necessarily get in your area.