PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-12:12:50
G01     72.5           32.4                2.8 +/-    0.61       4.7 +/-    0.61  0.040 / 0.090
G07     135.5          30.7                2.9 +/-    1.03       5.0 +/-    1.03  0.050 / 0.070
G11     55.5           33.6                2.2 +/-    0.65       3.6 +/-    0.65  0.040 / 0.060
G13     276.5          38.8                5.8 +/-    0.87       8.6 +/-    0.87  0.050 / 0.070
G15     305.2          14.3                1.2 +/-    3.54       3.2 +/-    3.54  0.060 / 0.110
G17     226.7          62.8                6.3 +/-    1.12       7.0 +/-    1.12  0.050 / 0.130
G18     50.3           19.1                2.5 +/-    0.75       5.5 +/-    0.75  0.040 / 0.100
G19     221.3          41.4                6.7 +/-    0.54       9.6 +/-    0.54  0.040 / 0.110
G28     1.1            61.4                3.0 +/-    0.43       3.4 +/-    0.43  0.090 / 0.200
G30     132.8          64.7                4.0 +/-    0.82       4.4 +/-    0.82  0.090 / 0.210