sprintf(r_txt,"pressure range: %d",my_info.range);
sprintf(ap_txt,"a_ap: %.2f b_ap: %.3f",my_info.a_ap,my_info.b_ap);
sprintf(el_txt,"a_el: %.2f b_el: %.3f",my_info.a_el,my_info.b_el);
sprintf(r_txt,"pressure range: %d",my_info.range);
sprintf(ap_txt,"a_ap: %.2f b_ap: %.3f",my_info.a_ap,my_info.b_ap);
sprintf(el_txt,"a_el: %.2f b_el: %.3f",my_info.a_el,my_info.b_el);