PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-23:42:40
G10     243.9          22.3               12.0 +/-    1.59      24.9 +/-    1.59  0.120 / 0.140
G13     61.2           32.7                8.1 +/-    0.81      13.4 +/-    0.81  0.080 / 0.120
G15     102.3          57.3               11.4 +/-    0.90      13.3 +/-    0.90  0.040 / 0.050
G16     304.6          14.9                5.8 +/-    1.96      14.5 +/-    1.96  0.040 / 0.060
G20     259.8          45.0               11.2 +/-    3.20      15.1 +/-    3.20  0.070 / 0.110
G21     324.4          54.0                9.1 +/-    0.43      10.9 +/-    0.43  0.060 / 0.130
G26     276.6          18.1                9.2 +/-    0.96      21.3 +/-    0.96  0.030 / 0.040
G29     159.8          58.5               12.0 +/-    0.61      13.8 +/-    0.61  0.030 / 0.040