PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-08:27:50
G01     100.9          27.2                5.3 +/-    1.29       9.9 +/-    1.29  0.030 / 0.040
G07     113.5          53.4                6.9 +/-    0.44       8.3 +/-    0.44  0.030 / 0.040
G08     41.8           18.5                3.5 +/-    2.06       8.0 +/-    2.06  0.050 / 0.130
G11     84.7           44.5                6.1 +/-    1.04       8.3 +/-    1.04  0.060 / 0.130
G13     305.3          32.5                4.9 +/-    2.18       8.2 +/-    2.18  0.070 / 0.140
G17     207.1          40.3                7.1 +/-    1.22      10.2 +/-    1.22  0.090 / 0.180
G18     74.9           24.6                5.1 +/-    1.18      10.1 +/-    1.18  0.230 / 0.410
G19     209.1          18.8               -1.3 +/-    7.62      -2.9 +/-    7.62  0.200 / 0.320
G28     311.5          58.9                5.4 +/-    0.67       6.2 +/-    0.67  0.030 / 0.030
G30     33.0           80.0                5.7 +/-    0.19       5.8 +/-    0.19  0.030 / 0.020