diff --git a/cara/apps/calculator/report_generator.py b/cara/apps/calculator/report_generator.py
index a064a0e1..a11a1e9a 100644
--- a/cara/apps/calculator/report_generator.py
+++ b/cara/apps/calculator/report_generator.py
@@ -44,7 +44,7 @@ def fill_big_gaps(array, gap_size):
 
     last_value = array[0]
     for value in array:
-        while value - last_value > gap_size:
+        while value - last_value > gap_size + 1e-15:
             last_value = last_value + gap_size
             result.append(last_value)
         result.append(value)
diff --git a/cara/tests/apps/calculator/test_report_generator.py b/cara/tests/apps/calculator/test_report_generator.py
index ad9b6b60..c18fdd45 100644
--- a/cara/tests/apps/calculator/test_report_generator.py
+++ b/cara/tests/apps/calculator/test_report_generator.py
@@ -48,6 +48,12 @@ def test_fill_big_gaps():
     assert rep_gen.fill_big_gaps([1, 2, 4], gap_size=0.75) == expected
 
 
+def test_fill_big_gaps__float_tolerance():
+    # Ensure that there is some float tolerance to the gap size check.
+    assert rep_gen.fill_big_gaps([0, 2 + 1e-15, 4], gap_size=2) == [0, 2 + 1e-15, 4]
+    assert rep_gen.fill_big_gaps([0, 2 + 1e-14, 4], gap_size=2) == [0, 2, 2 + 1e-14, 4]
+
+
 def test_non_temp_transition_times(baseline_exposure_model):
     expected = [0.0, 4.0, 5.0, 8.0]
     result = rep_gen.non_temp_transition_times(baseline_exposure_model)
@@ -72,13 +78,13 @@ def test_interesting_times_w_temp(exposure_model_w_outside_temp_changes):
     # Ensure that the state change times are returned (minus the temperature changes) by
     # requesting n_points=1.
     result = rep_gen.interesting_times(exposure_model_w_outside_temp_changes, approx_n_pts=1)
-    expected = [0.0, 1.8, 2.2, 3.6, 4.0, 5.0, 5.4, 5.8, 7.2, 7.6, 8.0]
-    np.testing.assert_allclose(result, expected, atol=1e-04)
+    expected = [0., 1.8, 2.2, 4., 4.4, 5., 6.2, 6.6, 8.]
+    np.testing.assert_allclose(result, expected)
 
     # Now request more than the state-change times.
     result = rep_gen.interesting_times(exposure_model_w_outside_temp_changes, approx_n_pts=20)
     expected = [
-        0., 0.4, 0.8, 1.2, 1.6, 1.8, 2.2, 2.2, 2.6, 3., 3.4, 3.6, 4.,
-        4.4, 4.8, 5., 5.4, 5.4, 5.8, 5.8, 6.2, 6.6, 7., 7.2, 7.6, 7.6, 8.,
+        0., 0.4, 0.8, 1.2, 1.6, 1.8, 2.2, 2.6, 3., 3.4, 3.8, 4., 4.4, 4.8,
+        5., 5.4, 5.8, 6.2, 6.6, 7., 7.4, 7.8, 8.
     ]
-    np.testing.assert_allclose(result, expected, atol=1e-04)
+    np.testing.assert_allclose(result, expected)
diff --git a/cara/tests/conftest.py b/cara/tests/conftest.py
index 053544cc..9499dfcf 100644
--- a/cara/tests/conftest.py
+++ b/cara/tests/conftest.py
@@ -44,7 +44,7 @@ def exposure_model_w_outside_temp_changes(baseline_exposure_model: models.Exposu
     exp_model = cara.dataclass_utils.nested_replace(
         baseline_exposure_model, {
             'concentration_model.ventilation': models.SlidingWindow(
-                active=models.PeriodicInterval(1.8 * 60, 2.2 * 60),
+                active=models.PeriodicInterval(2.2 * 60, 1.8 * 60),
                 inside_temp=models.PiecewiseConstant((0., 24.), (293,)),
                 outside_temp=cara.data.GenevaTemperatures['Jan'],
                 window_height=1.6,