PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-08:12:40
G01     75.7           32.3                5.7 +/-    1.14       9.5 +/-    1.14  0.040 / 0.030
G07     133.5          35.2                6.9 +/-    1.00      11.0 +/-    1.00  0.050 / 0.030
G11     59.0           36.9                4.6 +/-    1.29       7.1 +/-    1.29  0.130 / 0.090
G13     280.5          39.0                8.7 +/-    1.58      12.9 +/-    1.58  0.090 / 0.100
G15     306.7          14.2                2.9 +/-    3.38       7.4 +/-    3.38  0.110 / 0.290
G17     222.9          62.7                6.9 +/-    1.26       7.6 +/-    1.26  0.110 / 0.240
G19     219.1          38.9                6.4 +/-    1.47       9.5 +/-    1.47  0.050 / 0.050
G28     352.6          61.5                4.8 +/-    1.08       5.4 +/-    1.08  0.070 / 0.050
G30     128.0          70.2                7.2 +/-    0.35       7.6 +/-    0.35  0.040 / 0.080