PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-11:27:50
G01     38.7           12.9                1.5 +/-    0.94       4.0 +/-    0.94  0.060 / 0.130
G06     172.5          42.8                7.7 +/-    1.61      10.8 +/-    1.61  0.070 / 0.150
G13     233.8          20.6                6.4 +/-    1.77      13.9 +/-    1.77  0.180 / 0.290
G15     268.7          11.0                3.7 +/-    5.15      10.1 +/-    5.15  0.110 / 0.240
G17     2.3            69.7                6.5 +/-    0.52       6.9 +/-    0.52  0.030 / 0.040
G19     290.5          71.7                6.4 +/-    0.61       6.7 +/-    0.61  0.030 / 0.030
G24     315.7          20.3                4.4 +/-    2.49       9.6 +/-    2.49  0.100 / 0.210
G28     68.0           50.8                4.5 +/-    0.53       5.6 +/-    0.53  0.120 / 0.220
G30     155.9          26.2                6.9 +/-    1.40      13.1 +/-    1.40  0.040 / 0.040