def rel_humid_from_db_wb(db_temp, wet_bulb, b_press=<NUM_LIT>):
<EOL>p_ws = saturated_vapor_pressure(db_temp + <NUM_LIT>)<EOL>p_ws_wb = saturated_vapor_pressure(wet_bulb + <NUM_LIT>)<EOL>p_w = p_ws_wb - (b_press * <NUM_LIT> * (db_temp - wet_bulb))<EOL>rel_humid = (p_w / p_ws) * <NUM_LIT:100><EOL>return rel_humid<EOL>
Relative Humidity (%) at db_temp(C), wet_bulb (C), and Pressure b_press (Pa).