PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-08:12:30
G02     332.7          80.8                4.2 +/-    0.51       4.2 +/-    0.51  0.090 / 0.120
G05     168.0          26.8                6.0 +/-    2.37      11.3 +/-    2.37  0.080 / 0.120
G06     39.9           45.5                3.5 +/-    0.82       4.7 +/-    0.82  0.040 / 0.030
G12     318.0          67.1                4.7 +/-    0.75       5.0 +/-    0.75  0.030 / 0.030
G17     81.2           13.8                5.1 +/-    2.89      13.1 +/-    2.89  0.070 / 0.090
G19     70.3           28.5                6.6 +/-    1.89      12.0 +/-    1.89  0.080 / 0.110
G24     234.3          26.7                5.6 +/-    2.47      10.4 +/-    2.47  0.040 / 0.020
G25     317.2          23.8                3.5 +/-    1.38       6.9 +/-    1.38  0.030 / 0.020