Table 4 Average channel gain and standard deviation of off-body channels

1

Ceiling-to-chest

− 47.65

1.78

− 1.89

1.30

− 2.79

1.53

− 52.33

1.32

2

Ceiling-to-back

− 54.15

3.89

− 1.10

0.96

− 33.42

4.00

− 88.67

5.37

3

Ceiling-to-hand

− 60.84

0.82

− 2.65

1.16

− 5.90

1.10

− 69.39

2.31

4

Ceiling-to-thigh

− 54.69

2.07

− 3.25

1.47

− 2.29

2.76

− 60.24

2.17

5

Ceiling-to-ear

− 52.38

1.34

− 0.22

0.85

− 6.49

0.29

− 59.09

0.37