PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-22:57:30
G10     288.5          49.5                8.7 +/-    2.85      11.1 +/-    2.85  0.040 / 0.030
G15     47.9           34.7                7.5 +/-    0.98      11.9 +/-    0.98  0.040 / 0.030
G20     335.6          65.0                8.5 +/-    0.61       9.3 +/-    0.61  0.080 / 0.080
G21     64.0           77.3                9.4 +/-    0.45       9.6 +/-    0.45  0.060 / 0.070
G24     106.3          23.5               10.1 +/-    1.16      20.4 +/-    1.16  0.140 / 0.150
G27     308.1          30.4                8.3 +/-    1.72      14.4 +/-    1.72  0.070 / 0.150
G29     167.9          14.2               10.7 +/-    2.11      27.1 +/-    2.11  0.100 / 0.100
G32     207.7          24.5               12.2 +/-    1.91      24.1 +/-    1.91  0.140 / 0.110