PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-12:28:10
G03     187.8          16.4                5.6 +/-    2.21      13.5 +/-    2.21  0.200 / 0.120
G07     298.1          44.2                5.8 +/-    3.46       7.9 +/-    3.46  0.140 / 0.110
G08     139.7          30.6                8.4 +/-    0.80      14.5 +/-    0.80  0.060 / 0.080
G09     319.3          65.5                5.3 +/-    0.57       5.8 +/-    0.57  0.080 / 0.080
G16     42.6           36.1                5.4 +/-    1.04       8.3 +/-    1.04  0.030 / 0.030
G23     127.8          73.3                6.7 +/-    0.47       6.9 +/-    0.47  0.030 / 0.030
G27     96.3           35.1                7.0 +/-    0.93      11.0 +/-    0.93  0.060 / 0.040
G30     278.0          17.8                5.6 +/-    5.75      13.0 +/-    5.75  0.030 / 0.040