PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-01:12:50
G10     283.4          47.4                8.0 +/-    2.56      10.4 +/-    2.56  0.090 / 0.110
G15     49.1           37.1                9.0 +/-    0.75      13.7 +/-    0.75  0.070 / 0.110
G20     325.5          64.3               10.3 +/-    0.69      11.3 +/-    0.69  0.140 / 0.070
G21     47.9           77.1               10.6 +/-    0.72      10.8 +/-    0.72  0.110 / 0.100
G24     109.4          21.6                9.5 +/-    1.57      20.0 +/-    1.57  0.040 / 0.030
G27     311.3          27.8                6.7 +/-    1.43      12.4 +/-    1.43  0.040 / 0.040
G29     167.6          17.0               11.8 +/-    1.66      28.0 +/-    1.66  0.060 / 0.070
G32     206.9          20.0               12.2 +/-    1.48      27.0 +/-    1.48  0.040 / 0.090