PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-11:12:50
G01     58.8           29.6                3.5 +/-    1.26       6.2 +/-    1.26  0.030 / 0.040
G07     141.7          20.4                3.4 +/-    2.80       7.5 +/-    2.80  0.020 / 0.030
G11     48.4           25.3                2.9 +/-    2.11       5.5 +/-    2.11  0.110 / 0.170
G13     261.1          36.2                5.5 +/-    2.53       8.5 +/-    2.53  0.070 / 0.180
G15     295.0          15.8                1.4 +/-    1.42       3.4 +/-    1.42  0.150 / 0.250
G17     251.7          74.1                5.2 +/-    0.32       5.4 +/-    0.32  0.100 / 0.260
G18     41.6           12.5                2.0 +/-    2.92       5.3 +/-    2.92  0.030 / 0.050
G19     231.9          52.7                4.7 +/-    2.03       5.7 +/-    2.03  0.040 / 0.030
G28     23.2           59.8                4.9 +/-    0.94       5.5 +/-    0.94  0.100 / 0.080
G30     144.1          53.6                6.0 +/-    0.61       7.3 +/-    0.61  0.080 / 0.100