Table of Sunspot Region Characteristics per Zürich/McIntosh system

CV-nbr.

ZMcI-type

Magnetic type

Length

Type penumbra

Distribution

1

Axx  

Unipolar   

-

No penumbra   

Single

2

Bxo   

Bipolar   

-

No penumbra   

Open

3

Bxi   

Bipolar   

-

No penumbra   

Intermediate

4

Hrx   

Unipolar    

-

Rudimentary

Single

5

Cro   

Bipolar one side    

-

Rudimentary

Open

6

Cri   

Bipolar one side    

-

Rudimentary

Intermediate

7

Hax   

Unipolar    

-

Asymmetric, <2½°

Single

8

Cao   

Bipolar one side    

-

Asymmetric, <2½°

Open

9

Cai   

Bipolar one side    

-

Asymmetric, <2½°

Intermediate

10

Hsx   

Unipolar     

-

Symmetric, <2½° 

Single

11

Cso   

Bipolar one side     

-

Symmetric, <2½° 

Open

12

Csi   

Bipolar one side    

-

Symmetric, <2½° 

Intermediate

13

Dro   

Bipolar

<10°

Rudimentary

Open

14

Ero   

Bipolar

>10° <15°

Rudimentary

Open

15

Fro   

Bipolar

>15°     

Rudimentary

Open

16

Dri   

Bipolar

<10°   

Rudimentary

Intermediate

17

Eri   

Bipolar

>10° <15°

Rudimentary

Intermediate

18

Fri   

Bipolar

>15°     

Rudimentary

Intermediate

19

Dao   

Bipolar

<10°   

Asymmetric, <2½°   

Open

20

Eao   

Bipolar

>10° <15°

Asymmetric, <2½°   

Open

21

Fao   

Bipolar

>15°     

Asymmetric, <2½°   

Open

22

Dai   

Bipolar

<10°   

Asymmetric, <2½°   

Intermediate

23

Eai   

Bipolar

>10° <15°

Asymmetric, <2½°   

Intermediate

24

Fai   

Bipolar

>15°     

Asymmetric, <2½°   

Intermediate

25

Dso   

Bipolar

<10°   

Symmetric, <2½°    

Open

26

Eso   

Bipolar

>10° <15°

Symmetric, <2½°    

Open

27

Fso   

Bipolar

>15°     

Symmetric, <2½°    

Open

28

Dsi   

Bipolar

<10°   

Symmetric, <2½°    

Intermediate

29

Esi   

Bipolar

>10° <15°

Symmetric, <2½°    

Intermediate

30

Fsi   

Bipolar

>15°     

Symmetric, <2½°    

Intermediate

31

Dac   

Bipolar

<10°   

Asymmetric, <2½°   

Compact

32

Eac   

Bipolar

>10° <15°

Asymmetric, <2½°   

Compact

33

Fac   

Bipolar

>15°     

Asymmetric, <2½°   

Compact

34

Dsc   

Bipolar

<10°   

Symmetric, <2½°   

Compact

35

Esc   

Bipolar

>10° <15°

Symmetric, <2½°   

Compact   

36

Fsc   

Bipolar

>15°     

Symmetric, <2½°   

Compact

37

Hkx   

Unipolar

-

Asymmetric, >2½°   

Single

38

Cko   

Bipolar one side    

-

Asymmetric, >2½°   

Open

39

Cki   

Bipolar one side    

-

Asymmetric, >2½°   

Intermediate

40

Hhx   

Unipolar     

-

Symmetric, >2½°   

Single

41

Cho   

Bipolar one side     

-

Symmetric, >2½°   

Open

42

Chi   

Bipolar one side     

-

Symmetric, >2½°   

Intermediate

43

Dko   

Bipolar

<10°   

Asymmetric, >2½°   

Open

44

Eko   

Bipolar

>10° <15°

Asymmetric, >2½°   

Open

45

Fko   

Bipolar

>15°     

Asymmetric, >2½°   

Open

46

Dki   

Bipolar

<10°   

Asymmetric, >2½°   

Intermediate

47

Eki   

Bipolar

>10° <15°

Asymmetric, >2½°   

Intermediate

48

Fki   

Bipolar

>15°     

Asymmetric, >2½°   

Intermediate

49

Dho   

Bipolar

<10°   

Symmetric, >2½°   

Open

50

Eho   

Bipolar

>10° <15°

Symmetric, >2½°   

Open

51

Fho   

Bipolar

>15°     

Symmetric, >2½°   

Open

52

Dhi   

Bipolar

<10°   

Symmetric, >2½°   

Intermediate

53

Ehi   

Bipolar

>10° <15°

Symmetric, >2½°   

Intermediate

54

Fhi   

Bipolar

>15°     

Symmetric, >2½°   

Intermediate

55

Dkc   

Bipolar

<10°   

Asymmetric, >2½°   

Compact

56

Ekc   

Bipolar

>10° <15°

Asymmetric, >2½°   

Compact

57

Fkc   

Bipolar

>15°   

Asymmetric, >2½°   

Compact

58

Dhc   

Bipolar

<10°    

Symmetric, >2½°   

Compact

59

Ehc   

Bipolar

>10° <15°

Symmetric, >2½°   

Compact

60

Fhc   

Bipolar

>15°     

Symmetric, >2½°   

Compact

Each group's/region's CV-count are summarized per observing day and averaged per month

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; mai-06