Place
- Czech Republic16
- Kazakhstan13
- Iowa12
- Moldova10
- Antarctica--Victoria Land9
- Hungary9
- Russia--Stavropol' Krai9
- Wisconsin9
- Kentucky8
- Slovakia7
- Iran6
- Kazakhstan--Shet District6
- Russia--Kalmykiya Republic6
- Russia--Rostov Oblast6
- Russia--Vysokoye6
- Antarctica--Marie Byrd Land5
- Belarus--Haradok5
- Belarus--Slabada5
- Bettioua, Algeria5
- Antarctica--McMurdo Sound4