PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-23:57:50
G05     46.0           24.2                6.8 +/-    1.30      13.5 +/-    1.30  0.070 / 0.080
G13     87.0           34.9                9.9 +/-    1.40      15.7 +/-    1.40  0.080 / 0.110
G15     135.5          45.8               13.1 +/-    0.85      17.4 +/-    0.85  0.110 / 0.290
G20     240.4          29.5               12.0 +/-    2.13      21.2 +/-    2.13  0.130 / 0.380
G21     304.7          40.6               10.2 +/-    0.67      14.7 +/-    0.67  0.050 / 0.130
G25     204.7          19.2               12.5 +/-    1.86      27.9 +/-    1.86  0.050 / 0.120
G26     298.0          19.5               10.0 +/-    1.80      22.2 +/-    1.80  0.030 / 0.060
G29     134.0          81.4                9.5 +/-    0.95       9.6 +/-    0.95  0.040 / 0.060