PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-08:42:40
G07     43.0           69.5                3.6 +/-    0.52       3.8 +/-    0.52  0.040 / 0.040
G08     52.4           40.8                3.1 +/-    0.92       4.5 +/-    0.92  0.040 / 0.050
G09     174.5          35.5                6.8 +/-    1.10      10.7 +/-    1.10  0.030 / 0.040
G11     120.9          33.3                5.5 +/-    0.49       9.1 +/-    0.49  0.030 / 0.030
G17     198.9          12.6                3.8 +/-    2.05      10.0 +/-    2.05  0.110 / 0.270
G18     105.9          14.7                4.7 +/-    1.44      11.9 +/-    1.44  0.180 / 0.300
G23     161.1          12.2                3.2 +/-    1.83       8.4 +/-    1.83  0.170 / 0.280
G27     38.1           11.3                1.9 +/-    1.69       5.1 +/-    1.69  0.130 / 0.270
G28     269.3          50.0                4.0 +/-    0.81       5.0 +/-    0.81  0.090 / 0.260
G30     326.7          56.0                2.5 +/-    1.25       3.0 +/-    1.25  0.120 / 0.250