PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/30-02:58:00
G01     320.0          16.1              -20.7 +/-   17.79     -50.0 +/-   17.79  0.140 / 0.400
G08     264.5          15.2               10.5 +/-    1.67      26.0 +/-    1.67  0.140 / 0.340
G10     74.9           53.7                9.1 +/-    0.48      11.0 +/-    0.48  0.180 / 0.360
G11     306.8          20.6                6.9 +/-    2.54      14.9 +/-    2.54  0.040 / 0.040
G14     282.4          69.2                9.4 +/-    0.52       9.9 +/-    0.52  0.040 / 0.040
G18     307.7          38.4                8.0 +/-    1.24      12.0 +/-    1.24  0.080 / 0.090
G20     102.2          32.0                7.9 +/-    0.65      13.3 +/-    0.65  0.060 / 0.100
G27     227.1          11.7               11.9 +/-    1.52      32.1 +/-    1.52  0.020 / 0.020
G31     175.4          38.9               10.2 +/-    1.20      15.2 +/-    1.20  0.020 / 0.030
G32     356.6          70.7                8.3 +/-    0.54       8.7 +/-    0.54  0.110 / 0.330