PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/06-12:58:00
G01     72.6           32.5                4.2 +/-    0.98       7.0 +/-    0.98  0.040 / 0.040
G07     135.5          30.4                6.0 +/-    1.04      10.4 +/-    1.04  0.050 / 0.050
G11     55.4           33.4                4.6 +/-    1.22       7.5 +/-    1.22  0.060 / 0.070
G13     276.6          38.8                4.9 +/-    1.27       7.3 +/-    1.27  0.070 / 0.090
G15     305.0          14.5                0.8 +/-    1.51       2.0 +/-    1.51  0.060 / 0.050
G17     226.6          62.4                5.6 +/-    0.97       6.3 +/-    0.97  0.030 / 0.050
G18     50.3           19.0                5.0 +/-    2.02      11.2 +/-    2.02  0.060 / 0.080
G19     221.3          41.2                5.6 +/-    0.93       7.9 +/-    0.93  0.090 / 0.070
G28     1.5            61.3                4.3 +/-    0.76       4.9 +/-    0.76  0.100 / 0.260
G30     132.8          64.2                6.3 +/-    0.39       6.9 +/-    0.39  0.080 / 0.330