how can i calculate mean of variable importance in the list ?

General
1

these are variable importance of random forest from caret package. how can I calculate the mean of each feature of the element of the list ( if it's exist) ?

[[1]]
rf variable importance
only 20 most important variables shown (out of 119)

                  Overall

age 100.00
Albumin 65.69
Calcium 55.30
CPK 47.96
Urea 37.25
PR 33.77
BS 32.71
FBS
31.59
Neutrophils 29.57
SystolicBP 26.72
Ferritin 25.84
PotassiumK 25.56
HB 24.63
ALP 24.32
ESR 24.02
Weight 23.32
DiastolicBP 23.30
ALT 22.19
Chronickidneydisease1 21.87
Ddimer 20.51

[[2]]
rf variable importance

only 20 most important variables shown (out of 119)

                        Overall

age 100.00
PR 90.48
Albumin 62.39
Urea 60.87
BS 58.73
Weight 55.91
LDH 45.45
Chronickidneydisease1 40.57
TotalLungInvolvementPercent 39.49
FBS 39.28
ESR 38.19
SystolicBP 36.55
CPK 36.31
Calcium 36.21
Lymphocyte 36.16
RR 35.07
PLT 33.16
ALP 32.83
AST 32.56
EjectionFraction 32.33

[[3]]
rf variable importance

only 20 most important variables shown (out of 119)

                  Overall

RR 100.00
age 95.02
Albumin 69.93
LDH 57.75
Calcium 57.22
Chronickidneydisease1 56.75
PR 53.17
Weight 48.14
BS 44.66
BMI 43.16
WBC 40.23
CRP 37.56
Lymphocyte 37.10
ESR 37.10
Cancers1 36.01
EjectionFraction 35.47
Neutrophyl 34.85
Ferritin 34.72
SystolicBP 34.57
ALT 33.62

2

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