Change: Default low gradient factor to 60% (#80)

30% GF low (30% to the M-value ceiling) is overly conservative for most dives, especially given the reduced emphasis on deep stops.

Author: Rolf-Smit

data/src/commonMain/kotlin/org/neotech/app/abysner/data/diveplanning/PlanningRepositoryImpl.kt

@@ -66,7 +66,7 @@ class PlanningRepositoryImpl(
             maxPPO2 = get(PREFERENCE_KEY_MAX_PPO2, 1.4),
             maxAscentRate = get(PREFERENCE_KEY_DIVER_SPEED_ASCENT, 5.0),
             maxDescentRate = get(PREFERENCE_KEY_DIVER_SPEED_DESCENT, 20.0),
-            gfLow = get(PREFERENCE_KEY_ALGORITHM_GF_LOW, 0.3),
+            gfLow = get(PREFERENCE_KEY_ALGORITHM_GF_LOW, 0.6),
             gfHigh = get(PREFERENCE_KEY_ALGORITHM_GF_HIGH, 0.7),
             forceMinimalDecoStopTime = get(PREFERENCE_KEY_FORCE_MINIMAL_STOP_TIME, true),
             useDecoGasBetweenSections = get(PREFERENCE_KEY_USE_DECO_GAS_BETWEEN_SECTIONS, false),

domain/src/commonMain/kotlin/org/neotech/app/abysner/domain/core/model/Configuration.kt

@@ -31,7 +31,7 @@ data class Configuration(
     val maxEND: Double = 30.0,
     val maxAscentRate: Double = 5.0,
     val maxDescentRate: Double = 20.0,
-    val gfLow: Double = 0.3,
+    val gfLow: Double = 0.6,
     val gfHigh: Double = 0.7,
     val forceMinimalDecoStopTime: Boolean = true,
     val useDecoGasBetweenSections: Boolean = false,