PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-07:43:00
G07     352.6          64.0                6.2 +/-    0.48       6.8 +/-    0.48  0.070 / 0.150
G08     87.5           53.7                7.2 +/-    1.02       8.7 +/-    1.02  0.160 / 0.120
G09     181.7          63.3                8.0 +/-    0.86       8.9 +/-    0.86  0.030 / 0.030
G11     140.8          19.8                7.4 +/-    2.81      16.4 +/-    2.81  0.030 / 0.040
G23     157.4          30.6                8.4 +/-    1.13      14.6 +/-    1.13  0.030 / 0.030
G27     47.8           26.5                3.4 +/-    1.69       6.3 +/-    1.69  0.040 / 0.030
G28     242.3          29.9                7.0 +/-    1.16      12.4 +/-    1.16  0.090 / 0.180
G30     308.4          40.4                5.5 +/-    1.26       8.0 +/-    1.26  0.100 / 0.210