PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/03-23:57:40
G01     119.8          17.0                8.4 +/-    1.14      20.0 +/-    1.14  0.040 / 0.070
G07     84.0           64.1                6.7 +/-    0.83       7.3 +/-    0.83  0.040 / 0.060
G08     44.6           30.2                5.0 +/-    0.79       8.6 +/-    0.79  0.130 / 0.280
G09     176.8          27.0                8.9 +/-    1.82      16.5 +/-    1.82  0.110 / 0.360
G11     105.8          39.9                8.1 +/-    0.89      11.8 +/-    0.89  0.030 / 0.040
G13     317.9          19.1                6.9 +/-    1.08      15.6 +/-    1.08  0.030 / 0.040
G17     200.2          25.6                9.4 +/-    1.47      18.0 +/-    1.47  0.080 / 0.190
G18     90.9           20.0                7.6 +/-    1.11      16.8 +/-    1.11  0.070 / 0.190
G28     286.2          54.9                7.8 +/-    0.95       9.4 +/-    0.95  0.100 / 0.250
G30     343.3          67.4                5.1 +/-    0.87       5.5 +/-    0.87  0.100 / 0.250