324.520a

2.85756b;

297.762

2.88402;

273.053

2.91047;

250.222

2.93693;

229.126

2.96339;

209.630

2.98985;

191.612

3.01631;

174.953

3.04277;

159.550

3.06923;

145.305

3.09569;

132.129

3.12215;

119.940

3.14860