PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-09:12:50
G01     123.9          14.2                5.8 +/-    3.10      14.7 +/-    3.10  0.040 / 0.040
G07     66.7           68.3                5.2 +/-    0.30       5.5 +/-    0.30  0.030 / 0.040
G08     46.9           34.5                2.9 +/-    0.22       4.7 +/-    0.22  0.020 / 0.030
G09     174.2          27.4                7.4 +/-    1.79      13.6 +/-    1.79  0.030 / 0.030
G11     112.2          37.6                6.7 +/-    0.93      10.1 +/-    0.93  0.160 / 0.350
G13     319.8          15.2                0.7 +/-    3.01       1.6 +/-    3.01  0.170 / 0.340
G17     199.9          20.3                5.4 +/-    0.91      11.8 +/-    0.91  0.120 / 0.520
G18     98.5           18.5                5.6 +/-    1.55      12.8 +/-    1.55  0.130 / 0.470
G28     281.5          54.3                5.2 +/-    0.75       6.3 +/-    0.75  0.100 / 0.240
G30     335.4          62.7                3.1 +/-    0.57       3.5 +/-    0.57  0.100 / 0.280