PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-12:42:40
G01     127.6          10.0              -12.1 +/-   34.01     -33.7 +/-   34.01  0.100 / 0.100
G07     57.2           68.0                6.2 +/-    0.48       6.7 +/-    0.48  0.080 / 0.070
G08     53.8           43.5                4.8 +/-    1.03       6.6 +/-    1.03  0.060 / 0.100
G09     178.9          39.5                6.8 +/-    1.25      10.0 +/-    1.25  0.080 / 0.120
G11     120.5          34.9                7.4 +/-    1.19      11.8 +/-    1.19  0.030 / 0.030
G13     321.2          11.0               -5.1 +/-   11.71     -14.0 +/-   11.71  0.040 / 0.030
G18     104.6          15.6                6.1 +/-    3.30      14.8 +/-    3.30  0.080 / 0.300
G27     37.5           9.6                 4.2 +/-    3.16      11.9 +/-    3.16  0.130 / 0.270
G28     267.0          46.9                5.4 +/-    4.23       7.1 +/-    4.23  0.050 / 0.070
G30     332.2          60.2                5.0 +/-    0.70       5.7 +/-    0.70  0.050 / 0.080