PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-19:43:00
G02     235.1          73.0                9.6 +/-    0.48      10.0 +/-    0.48  0.030 / 0.040
G05     172.3          14.0               14.0 +/-    3.33      35.6 +/-    3.33  0.030 / 0.040
G06     41.3           61.7               10.3 +/-    0.48      11.5 +/-    0.48  0.080 / 0.090
G12     320.7          47.0                8.9 +/-    0.56      11.7 +/-    0.56  0.120 / 0.070
G17     67.4           25.3                9.0 +/-    0.73      17.5 +/-    0.73  0.040 / 0.060
G19     54.7           39.3                8.7 +/-    1.51      12.8 +/-    1.51  0.040 / 0.060
G24     248.2          36.1               11.2 +/-    1.84      17.5 +/-    1.84  0.060 / 0.110