Makes the station Z level into a list instead of a single define

code/datums/weather/weather.dm

@@ -30,7 +30,7 @@
 	var/area_type = /area/space //Types of area to affect
 	var/list/impacted_areas = list() //Areas to be affected by the weather, calculated when the weather begins
 	var/list/protected_areas = list()//Areas that are protected and excluded from the affected areas.
-	var/target_z = ZLEVEL_STATION //The z-level to affect
+	var/target_z = ZLEVEL_STATION_PRIMARY //The z-level to affect
 
 	var/overlay_layer = AREA_LAYER //Since it's above everything else, this is the layer used by default. TURF_LAYER is below mobs and walls if you need to use that.
 	var/aesthetic = FALSE //If the weather has no purpose other than looks

code/datums/weather/weather_types.dm

@@ -17,7 +17,7 @@
 
 	area_type = /area
 	protected_areas = list(/area/space)
-	target_z = ZLEVEL_STATION
+	target_z = ZLEVEL_STATION_PRIMARY
 
 	overlay_layer = ABOVE_OPEN_TURF_LAYER //Covers floors only
 	immunity_type = "lava"
@@ -48,7 +48,7 @@
 	end_duration = 0
 
 	area_type = /area
-	target_z = ZLEVEL_STATION
+	target_z = ZLEVEL_STATION_PRIMARY
 
 /datum/weather/advanced_darkness/update_areas()
 	for(var/V in impacted_areas)
@@ -142,7 +142,7 @@
 	area_type = /area
 	protected_areas = list(/area/maintenance, /area/ai_monitored/turret_protected/ai_upload, /area/ai_monitored/turret_protected/ai_upload_foyer,
 	/area/ai_monitored/turret_protected/ai, /area/storage/emergency/starboard, /area/storage/emergency/port, /area/shuttle)
-	target_z = ZLEVEL_STATION
+	target_z = ZLEVEL_STATION_PRIMARY
 
 	immunity_type = "rad"