PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-01:12:30
G10     299.1          53.0                9.3 +/-    1.62      11.3 +/-    1.62  0.040 / 0.040
G14     210.0          11.2               -4.8 +/-   21.67     -13.1 +/-   21.67  0.040 / 0.040
G15     46.0           27.4                6.8 +/-    1.48      12.6 +/-    1.48  0.070 / 0.110
G20     351.9          65.2                9.4 +/-    0.57      10.2 +/-    0.57  0.070 / 0.110
G21     95.1           74.5               10.4 +/-    0.38      10.7 +/-    0.38  0.060 / 0.060
G24     98.2           26.7                9.8 +/-    1.04      18.5 +/-    1.04  0.070 / 0.080
G27     301.2          34.1                8.5 +/-    1.26      13.7 +/-    1.26  0.300 / 0.520
G32     210.5          30.8               11.8 +/-    1.64      20.3 +/-    1.64  0.180 / 0.540