PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-09:12:50
G01     101.0          27.2                3.8 +/-    1.66       7.0 +/-    1.66  0.030 / 0.040
G07     113.6          53.1                4.2 +/-    0.64       5.1 +/-    0.64  0.030 / 0.040
G08     41.8           19.1                3.6 +/-    2.06       8.2 +/-    2.06  0.050 / 0.060
G11     84.3           44.3                6.9 +/-    0.92       9.4 +/-    0.92  0.050 / 0.070
G13     305.3          32.4                3.0 +/-    2.28       5.0 +/-    2.28  0.180 / 0.300
G17     207.2          39.8                5.9 +/-    1.38       8.6 +/-    1.38  0.090 / 0.170
G18     74.9           24.6                5.0 +/-    1.83       9.8 +/-    1.83  0.080 / 0.130
G19     209.2          18.7               -3.0 +/-    4.03      -6.9 +/-    4.03  0.060 / 0.070
G28     311.9          59.0                4.1 +/-    0.89       4.7 +/-    0.89  0.050 / 0.080
G30     35.6           80.0                3.7 +/-    0.71       3.7 +/-    0.71  0.140 / 0.140