Table 1 Statistical significance between all categories pairs with P≤0.05, subdivided with respect to maximum cirrus geometrical depth.

From: Aviation effects on already-existing cirrus clouds

Maximum cirrus geometrical depth (km)

Significant differences between categories

2.0

III−IV, III−II, III−I

2.5

III−IV, III−II, III−I

3.0

III−IV, III−II

4.0

III−IV

5.0

III−IV

6.0

III−IV

  1. The tests were performed for all category pairs.