PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-02:42:50
G01     114.9          18.7               19.6 +/-    1.43      44.6 +/-    1.43  0.040 / 0.040
G07     84.3           65.9                6.4 +/-    0.32       6.9 +/-    0.32  0.030 / 0.030
G08     43.9           28.7                2.6 +/-    0.75       4.7 +/-    0.75  0.040 / 0.080
G09     173.3          20.3                8.1 +/-    2.92      17.7 +/-    2.92  0.050 / 0.080
G11     109.8          42.4                9.7 +/-    0.63      13.6 +/-    0.63  0.030 / 0.040
G13     316.2          22.3                1.7 +/-    2.02       3.4 +/-    2.02  0.030 / 0.040
G17     200.9          26.9                7.2 +/-    0.72      13.5 +/-    0.72  0.070 / 0.230
G28     283.3          52.0                8.0 +/-    1.01       9.9 +/-    1.01  0.080 / 0.190
G30     340.3          67.2                3.9 +/-    0.54       4.2 +/-    0.54  0.060 / 0.080