PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-21:28:10
G02     15.5           67.9                7.9 +/-    0.47       8.5 +/-    0.47  0.130 / 0.730
G05     155.4          48.6               11.8 +/-    1.31      15.1 +/-    1.31  0.150 / 0.490
G06     47.1           25.9                8.1 +/-    1.80      15.5 +/-    1.80  0.030 / 0.060
G12     232.8          80.0                8.7 +/-    0.79       8.8 +/-    0.79  0.030 / 0.060
G19     87.0           20.6                8.6 +/-    1.55      18.7 +/-    1.55  0.020 / 0.030
G24     217.0          12.3               12.1 +/-    2.26      32.2 +/-    2.26  0.030 / 0.040
G25     311.8          42.2                8.8 +/-    2.51      12.4 +/-    2.51  0.040 / 0.050
G29     296.4          16.8                7.9 +/-    1.77      18.8 +/-    1.77  0.040 / 0.040