PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-12:58:10
G01     57.4           29.5                5.0 +/-    1.99       8.8 +/-    1.99  0.030 / 0.040
G07     143.3          19.7                3.1 +/-    1.14       6.8 +/-    1.14  0.040 / 0.040
G11     46.6           20.3                5.2 +/-    2.87      11.3 +/-    2.87  0.120 / 0.180
G13     259.0          34.4                5.0 +/-    1.02       8.1 +/-    1.02  0.110 / 0.180
G15     295.1          14.8                0.0 +/-    0.95       0.0 +/-    0.95  0.100 / 0.140
G17     278.5          79.4                3.5 +/-    0.69       3.6 +/-    0.69  0.090 / 0.090
G18     40.3           10.6                4.5 +/-    2.21      12.4 +/-    2.21  0.100 / 0.120
G19     234.4          49.1                2.9 +/-    2.02       3.7 +/-    2.02  0.070 / 0.110
G28     39.5           56.0                3.5 +/-    0.98       4.2 +/-    0.98  0.110 / 0.360
G30     145.9          51.7                4.5 +/-    0.39       5.6 +/-    0.39  0.100 / 0.350