PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-02:58:10
G01     109.6          23.9               12.0 +/-    0.94      24.0 +/-    0.94  0.030 / 0.030
G07     104.6          57.7                9.7 +/-    0.70      11.3 +/-    0.70  0.040 / 0.050
G08     41.7           20.2                5.2 +/-    3.56      11.5 +/-    3.56  0.110 / 0.110
G09     174.3          14.9                7.4 +/-    1.22      18.6 +/-    1.22  0.090 / 0.140
G11     90.2           42.4                9.4 +/-    1.03      13.2 +/-    1.03  0.060 / 0.060
G13     311.4          27.4                2.5 +/-    2.26       4.7 +/-    2.26  0.040 / 0.050
G17     203.5          37.7                7.5 +/-    1.02      11.3 +/-    1.02  0.180 / 0.150
G28     307.9          59.5                5.3 +/-    1.67       6.1 +/-    1.67  0.080 / 0.160
G30     7.0            76.1                6.4 +/-    0.75       6.6 +/-    0.75  0.180 / 0.300