PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-09:27:50
G01     99.7           27.7                4.2 +/-    2.03       7.7 +/-    2.03  0.030 / 0.050
G07     115.2          52.0                6.0 +/-    0.79       7.4 +/-    0.79  0.040 / 0.030
G08     41.8           18.2                3.1 +/-    2.84       7.0 +/-    2.84  0.060 / 0.060
G11     82.5           44.2                5.5 +/-    1.38       7.5 +/-    1.38  0.050 / 0.070
G13     304.2          33.1                1.9 +/-    1.99       3.1 +/-    1.99  0.180 / 0.260
G17     207.9          41.0                4.6 +/-    1.04       6.6 +/-    1.04  0.160 / 0.220
G18     73.6           24.7                5.4 +/-    1.24      10.6 +/-    1.24  0.080 / 0.170
G19     209.6          19.8                0.4 +/-    6.64       0.9 +/-    6.64  0.190 / 0.220
G28     314.3          59.3                3.8 +/-    1.06       4.4 +/-    1.06  0.030 / 0.020
G30     44.0           80.4                5.5 +/-    0.79       5.6 +/-    0.79  0.030 / 0.020