PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-11:28:00
G07     345.6          62.2                4.0 +/-    0.40       4.4 +/-    0.40  0.080 / 0.150
G08     97.6           53.1                5.4 +/-    0.53       6.5 +/-    0.53  0.120 / 0.180
G09     188.8          70.9                5.6 +/-    0.40       5.9 +/-    0.40  0.140 / 0.340
G11     143.5          16.2                4.9 +/-    2.11      11.8 +/-    2.11  0.170 / 0.250
G23     155.1          34.1                4.8 +/-    0.82       7.8 +/-    0.82  0.040 / 0.030
G27     52.7           30.4                3.5 +/-    1.55       6.1 +/-    1.55  0.040 / 0.040
G28     238.0          26.6                5.5 +/-    2.80      10.3 +/-    2.80  0.090 / 0.120
G30     305.5          38.8                4.2 +/-    1.79       6.2 +/-    1.79  0.120 / 0.070