PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-08:42:40
G01     59.7           29.8                2.9 +/-    0.82       5.2 +/-    0.82  0.040 / 0.050
G06     179.1          14.3                4.0 +/-    1.66      10.0 +/-    1.66  0.040 / 0.040
G07     141.2          22.5                5.7 +/-    2.19      11.7 +/-    2.19  0.090 / 0.200
G11     49.3           27.1                2.5 +/-    1.19       4.7 +/-    1.19  0.100 / 0.170
G13     262.5          36.7                6.5 +/-    0.59      10.0 +/-    0.59  0.060 / 0.120
G15     294.2          16.5                1.0 +/-    1.34       2.5 +/-    1.34  0.060 / 0.100
G17     250.4          74.9                6.7 +/-    0.64       6.9 +/-    0.64  0.070 / 0.190
G19     230.6          51.9                8.9 +/-    1.05      11.0 +/-    1.05  0.090 / 0.120
G28     19.6           60.3                3.8 +/-    0.62       4.3 +/-    0.62  0.040 / 0.060
G30     143.6          56.3                6.7 +/-    0.86       7.9 +/-    0.86  0.040 / 0.060