PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-13:12:50
G01     111.6          21.9                6.0 +/-    1.62      12.7 +/-    1.62  0.040 / 0.080
G07     100.3          58.7                7.7 +/-    0.80       8.8 +/-    0.80  0.030 / 0.070
G08     43.3           27.9                4.7 +/-    1.85       8.6 +/-    1.85  0.060 / 0.070
G09     176.3          20.0                8.4 +/-    2.38      18.5 +/-    2.38  0.050 / 0.080
G11     96.9           43.0                7.7 +/-    0.42      10.7 +/-    0.42  0.030 / 0.040
G13     313.2          25.9                5.4 +/-    2.10      10.4 +/-    2.10  0.040 / 0.040
G17     203.8          28.9                8.5 +/-    1.51      15.3 +/-    1.51  0.090 / 0.150
G18     85.6           23.0                5.6 +/-    2.96      11.5 +/-    2.96  0.070 / 0.140
G28     295.9          56.4                6.8 +/-    1.40       7.9 +/-    1.40  0.120 / 0.200
G30     6.9            75.2                7.6 +/-    0.60       7.9 +/-    0.60  0.110 / 0.200