What is the solar elevation angle (in degrees)? ______________ What is the solar zenith angle (in degrees)? ______________ What is the solar insolation (has units of W m-2 )? ______________ What percentage of the solar constant is realized as solar insolation? To calculate this, divide your calculated solar insolation (I) by the solar constant (S0) and multiply by 100. A sunny day in February at noon when it was 70 degrees