PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-00:42:50
G10     246.3          24.4               13.2 +/-    0.67      26.2 +/-    0.67  0.120 / 0.140
G13     58.0           31.5               10.0 +/-    1.49      17.0 +/-    1.49  0.120 / 0.180
G15     95.5           57.5               13.0 +/-    1.20      15.1 +/-    1.20  0.040 / 0.060
G16     302.0          15.0                6.9 +/-    1.33      17.2 +/-    1.33  0.040 / 0.050
G20     263.4          47.2               13.2 +/-    3.36      17.2 +/-    3.36  0.060 / 0.140
G21     327.9          56.2               10.4 +/-    0.36      12.3 +/-    0.36  0.070 / 0.130
G26     273.9          17.2                9.4 +/-    2.56      22.2 +/-    2.56  0.030 / 0.040
G29     160.9          54.6               13.3 +/-    0.42      15.9 +/-    0.42  0.040 / 0.040