PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-22:27:50
G01     66.3           32.0               10.0 +/-    1.63      16.8 +/-    1.63  0.120 / 0.130
G07     138.9          22.9               11.9 +/-    1.85      24.5 +/-    1.85  0.080 / 0.130
G11     50.4           27.3                6.6 +/-    1.85      12.2 +/-    1.85  0.110 / 0.100
G13     269.2          37.6               10.3 +/-    3.93      15.6 +/-    3.93  0.110 / 0.130
G15     298.8          16.1                9.1 +/-    2.70      21.9 +/-    2.70  0.060 / 0.090
G17     241.1          73.8               11.5 +/-    0.38      11.9 +/-    0.38  0.060 / 0.070
G18     44.3           14.4                8.1 +/-    1.15      20.4 +/-    1.15  0.050 / 0.040
G19     226.3          45.1               12.4 +/-    2.07      16.7 +/-    2.07  0.050 / 0.050
G28     18.4           59.9                9.6 +/-    0.83      10.9 +/-    0.83  0.030 / 0.040
G30     139.0          57.7               11.3 +/-    0.43      13.1 +/-    0.43  0.040 / 0.040