PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-07:12:40
G01     67.9           31.7                4.8 +/-    0.77       8.1 +/-    0.77  0.030 / 0.030
G07     137.4          29.8                7.1 +/-    2.00      12.5 +/-    2.00  0.030 / 0.030
G11     54.2           33.2                4.9 +/-    1.48       8.0 +/-    1.48  0.110 / 0.260
G13     272.0          38.6                7.6 +/-    1.37      11.3 +/-    1.37  0.130 / 0.290
G15     300.5          16.0                2.3 +/-    1.82       5.5 +/-    1.82  0.070 / 0.100
G17     232.4          69.4                9.1 +/-    0.56       9.7 +/-    0.56  0.060 / 0.100
G19     223.6          45.0                8.7 +/-    2.05      11.7 +/-    2.05  0.040 / 0.030
G28     4.3            61.3                6.0 +/-    0.59       6.7 +/-    0.59  0.040 / 0.040
G30     136.8          64.6                8.5 +/-    0.70       9.3 +/-    0.70  0.050 / 0.060