PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-02:57:50
G01     110.4          21.7                8.1 +/-    1.16      17.1 +/-    1.16  0.030 / 0.040
G07     95.2           63.0                5.7 +/-    0.77       6.3 +/-    0.77  0.040 / 0.040
G08     42.5           24.5                2.5 +/-    1.17       4.9 +/-    1.17  0.030 / 0.040
G09     172.7          15.7                6.0 +/-    0.85      14.7 +/-    0.85  0.040 / 0.040
G11     103.0          44.2                6.5 +/-    0.68       8.9 +/-    0.68  0.080 / 0.230
G13     313.3          25.9                4.7 +/-    3.93       8.9 +/-    3.93  0.080 / 0.180
G17     202.2          32.0                7.5 +/-    0.97      12.6 +/-    0.97  0.050 / 0.090
G28     291.0          54.3                6.6 +/-    1.17       7.9 +/-    1.17  0.050 / 0.080
G30     348.2          71.5                5.2 +/-    0.55       5.5 +/-    0.55  0.040 / 0.060