PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/04-09:58:00
G03     188.7          14.0                4.0 +/-    6.17      10.3 +/-    6.17  0.060 / 0.090
G07     299.6          42.7                5.3 +/-    0.86       7.4 +/-    0.86  0.050 / 0.090
G08     132.7          36.0                8.3 +/-    1.30      13.0 +/-    1.30  0.070 / 0.140
G09     315.8          75.0                4.5 +/-    1.06       4.6 +/-    1.06  0.060 / 0.160
G16     41.6           27.7                0.8 +/-    1.65       1.5 +/-    1.65  0.110 / 0.330
G23     136.7          70.6                6.2 +/-    0.75       6.5 +/-    0.75  0.150 / 0.250
G27     88.4           36.6                5.0 +/-    0.46       7.7 +/-    0.46  0.040 / 0.070
G30     280.2          16.9                6.5 +/-    1.90      15.4 +/-    1.90  0.040 / 0.060