diff --git a/include/gnss_utils/gnss_utils.h b/include/gnss_utils/gnss_utils.h
index 146bdc584155a9b4a22cef831846e9e24ffe6e75..d777221479da0dbcdfb1077ba6ae63fbda642ff4 100644
--- a/include/gnss_utils/gnss_utils.h
+++ b/include/gnss_utils/gnss_utils.h
@@ -113,8 +113,8 @@ struct TdcpOptions
 
 struct Options
 {
-    int sateph;         // satellite ephemeris option: EPHOPT_BRDC(0):broadcast ephemeris, EPHOPT_PREC(1): precise ephemeris, EPHOPT_SBAS(2): broadcast + SBAS, EPHOPT_SSRAPC(3): broadcast + SSR_APC, EPHOPT_SSRCOM(4): broadcast + SSR_COM, EPHOPT_LEX(5): QZSS LEX ephemeris, EPHOPT_SBAS2(6):broadcast + SBAS(sats with SBAS corr and sats with BRDC eph), EPHOPT_SBAS3(7):broadcast + SBAS(2 if possible, otherwise 6), EPHOPT_SBAS4(8):broadcast + SBAS(2 if possible, otherwise 0)
-    int ionoopt;        // ionosphere option: IONOOPT_OFF(0):correction off, IONOOPT_BRDC(1):broadcast mode, IONOOPT_SBAS(2):SBAS model, IONOOPT_IFLC(3):L1/L2 or L1/L5, IONOOPT_EST(4):estimation, IONOOPT_TEC(5):IONEX TEC model, IONOOPT_QZS(6):QZSS broadcast, IONOOPT_LEX(7):QZSS LEX ionosphere, IONOOPT_STEC(8):SLANT TEC mode
+    int sateph;         // satellite ephemeris option: EPHOPT_BRDC(0):broadcast ephemeris, EPHOPT_PREC(1): precise ephemeris, EPHOPT_SBAS(2): broadcast + SBAS, EPHOPT_SSRAPC(3): broadcast + SSR_APC, EPHOPT_SSRCOM(4): broadcast + SSR_COM, EPHOPT_LEX(5): QZSS LEX ephemeris, EPHOPT_SBAS2(6):broadcast + SBAS(sats with SBAS corr and sats with BRDC eph), EPHOPT_SBAS3(7):broadcast + SBAS(EPHOPT_SBAS if possible, otherwise EPHOPT_SBAS2), EPHOPT_SBAS4(8):broadcast + SBAS(EPHOPT_SBAS if possible, otherwise EPHOPT_BRDC)
+    int ionoopt;        // ionosphere option: IONOOPT_OFF(0):correction off, IONOOPT_BRDC(1):broadcast mode, IONOOPT_SBAS(2):SBAS model, IONOOPT_IFLC(3):L1/L2 or L1/L5, IONOOPT_EST(4):estimation, IONOOPT_TEC(5):IONEX TEC model, IONOOPT_QZS(6):QZSS broadcast, IONOOPT_LEX(7):QZSS LEX ionosphere, IONOOPT_STEC(8):SLANT TEC mode, IONOOPT_SBAS2(9):broadcast + SBAS(sats with SBAS corr and sats with BRDC eph), IONOOPT_SBAS3(10):broadcast + SBAS(IONOOPT_SBAS if possible, otherwise IONOOPT_SBAS2), IONOOPT_SBAS4(11):broadcast + SBAS(IONOOPT_SBAS if possible, otherwise IONOOPT_BRDC)
     int tropopt;        // troposphere option: TROPOPT_OFF(0):correction off, TROPOPT_SAAS(1):Saastamoinen model, TROPOPT_SBAS(2):SBAS model, TROPOPT_EST(3):troposphere option: ZTD estimation, TROPOPT_ESTG(4):ZTD+grad estimation, TROPOPT_ZTD(5):ZTD correction,6:ZTD+grad correction
     int sbascorr;       // SBAS correction options (can be added): SBSOPT_LCORR(1): long term correction, SBSOPT_FCORR(2): fast correction, SBSOPT_ICORR(4): ionosphere correction, SBSOPT_RANGE(8): ranging
     int raim;           // RAIM removed sats