[FIX] SM monitoring console crash (#27971)

* Silly double negatives.

* value for coeff + contra reccomendation

* simplified logic (thanks funnyman)

Co-authored-by: Charlie Nolan <funnyman3595@gmail.com>
Signed-off-by: Erikos <Erikos66@outlook.com>

---------

Signed-off-by: Erikos <Erikos66@outlook.com>
Co-authored-by: Charlie Nolan <funnyman3595@gmail.com>

code/game/machinery/computer/sm_monitor.dm

@@ -105,7 +105,7 @@
 		return
 	for(var/obj/machinery/atmospherics/supermatter_crystal/S in SSair.atmos_machinery)
 		// Delaminating, not within coverage, not on a tile.
-		if(!(is_station_level(S.z) || is_mining_level(S.z) || atoms_share_level(S, T) || !issimulatedturf(S.loc)))
+		if(!atoms_share_level(S, T) || !issimulatedturf(S.loc))
 			continue
 		supermatters.Add(S)
 

code/modules/power/engines/supermatter/supermatter.dm

@@ -143,7 +143,7 @@
 	/// Refered to as eer on the moniter. This value effects gas output, heat, damage, and radiation.
 	var/power = 0
 	/// A bonus to rad production equal to EER multiplied by the bonus given by each gas. The bonus gets higher the more gas there is in the chamber.
-	var/gas_coefficient
+	var/gas_coefficient = 0
 	///Determines the rate of positve change in gas comp values
 	var/gas_change_rate = 0.05