added ability to pass the standard deviation of temperature and dewpoint
added ability to pass the standard deviation of temperature and dewpoint

scollis/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,djgagne/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,blizzardwarriorwx/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,scollis/SHARPpy