def _calc_taug(w, aod700, p):
p0 = <NUM_LIT><EOL>tg1 = <NUM_LIT> + <NUM_LIT>*np.log(w) + <NUM_LIT>*np.log(w)**<NUM_LIT:2><EOL>tg0 = <NUM_LIT> + <NUM_LIT>*np.log(w) + <NUM_LIT>*np.log(w)**<NUM_LIT:2><EOL>tgp = <NUM_LIT>*w + <NUM_LIT:0.1><EOL>taug = tg1*aod700 + tg0 + tgp*np.log(p/p0)<EOL>return taug<EOL>
Calculate the taug coefficient