PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-14:42:40
G02     334.8          78.6                8.4 +/-    0.36       8.6 +/-    0.36  0.080 / 0.170
G05     166.1          32.3               10.8 +/-    1.26      18.0 +/-    1.26  0.100 / 0.130
G06     41.5           38.9                7.3 +/-    0.57      10.9 +/-    0.57  0.050 / 0.060
G12     311.2          72.2                7.8 +/-    0.97       8.1 +/-    0.97  0.040 / 0.070
G17     84.9           12.9                9.8 +/-    2.17      25.6 +/-    2.17  0.160 / 0.210
G19     75.7           25.2                9.8 +/-    1.38      19.1 +/-    1.38  0.130 / 0.240
G24     229.4          22.7               11.0 +/-    1.58      22.7 +/-    1.58  0.030 / 0.040
G25     317.0          28.0                5.1 +/-    2.26       9.3 +/-    2.26  0.030 / 0.040