(6.51)

(6.82)

(7.01)

(7.31)

(6.71)

(7.01)

(7.63)

(6.50)

(6.82)

(6.42)

(6.53)

(7.12)

(6.71)

(7.13)

(7.45)

(7.80)

(6.92)

(7.32)

(6.61)

(7.10)

(4.80)

(6.45)