--- a/pkg/controllers/fwa.go	Tue May 12 11:00:50 2020 +0200
+++ b/pkg/controllers/fwa.go	Tue May 12 11:31:54 2020 +0200
@@ -313,6 +313,7 @@
 	var totalDays, shipableDays int
 
 	allClasses := make([][]time.Duration, len(validities))
+	minClasses := make([]time.Duration, len(validities))
 	missingLDCs := make([]int, len(validities))
 
 	// We step through the time in steps of one day.
@@ -348,6 +349,7 @@
 					ldc.value,
 					(*availMeasurement).getValue)
 
+				// If more than half of the day is below LDC -> not shipable.
 				if result[1] < 12*time.Hour {
 					shipable = false
 				}
@@ -364,6 +366,8 @@
 		}
 		totalDays++
 
+		minOfAll(allClasses, minClasses)
+
 		// TODO: Accumulate daily statistics into time segment.
 
 		if finish(next) {
@@ -396,6 +400,21 @@
 	}
 }
 
+func minOfAll(classes [][]time.Duration, min []time.Duration) {
+	for i := range min {
+		var m time.Duration
+		for _, cl := range classes {
+			if cl == nil {
+				continue
+			}
+			if cl[i] < m {
+				m = cl[i]
+			}
+		}
+		min[i] = m
+	}
+}
+
 func dusk(t time.Time) time.Time {
 	return time.Date(
 		t.Year(),