PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-21:12:30
G02     17.4           66.5                6.2 +/-    0.60       6.7 +/-    0.60  0.090 / 0.360
G05     154.5          49.4               11.2 +/-    0.97      14.2 +/-    0.97  0.100 / 0.390
G06     46.5           27.0                6.0 +/-    1.57      11.2 +/-    1.57  0.060 / 0.100
G12     256.2          79.2                9.4 +/-    1.15       9.6 +/-    1.15  0.060 / 0.100
G19     88.8           16.8                8.7 +/-    1.43      20.8 +/-    1.43  0.060 / 0.060
G24     217.4          12.0               12.1 +/-    2.69      32.3 +/-    2.69  0.060 / 0.070
G25     311.3          42.3                6.9 +/-    2.22       9.6 +/-    2.22  0.030 / 0.030
G29     297.8          19.8                9.1 +/-    1.34      20.1 +/-    1.34  0.030 / 0.030