Let's see if I can get this right:

J1CS	J1E
Magnitude	Direction
Bridge Length	Bridge length
Y-Axis	Variable #2
Hits To Kill	Strength
Added Score	Score
Movement sp	Movement speed
Anim. sp	Animation speed
Enemy Shot sp	Attack frequency
Byte #13	Attack
Multi Purpose	Variable #1
Medivo B. Len.	Moving platform length
Medivo B. Direct.	Moving platform start
Reflection	Reflection
Byte #21	(Event Number)
Byte #22	Sound
Byte #28	(TNT)

(J1CS has a field "Enemy Shot" that does not really work because it confuses byte 15, an unused byte, with 13, which is the actual enemy shot field.)
(The "Event Number" field is not visible in J1E because it's next to useless. Rumor has it that the HOCUS cheat makes reference to it, but otherwise I don't know of any reason to worry about it.)
(The "TNT" byte is one of six bytes that TNT pickups in official levels have set to 9, the other five being Bridge Length, Moving Platform Length, Moving Platform Start, Variable #1, and Variable #2 -- which is to say, all the five variable parameters whose functions vary greatly by behavior and modifier. One thus assumes that the TNT byte was supposed to be a sixth parameter available for some behaviors/modifiers, although AFAIK it is never actually used?)