PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-08:27:50
G01     112.0          21.2                4.0 +/-    2.01       8.4 +/-    2.01  0.030 / 0.040
G07     96.1           61.6                6.4 +/-    0.86       7.1 +/-    0.86  0.040 / 0.040
G08     43.5           28.5                3.1 +/-    2.12       5.5 +/-    2.12  0.110 / 0.130
G09     175.2          19.6                6.2 +/-    1.82      13.7 +/-    1.82  0.110 / 0.140
G11     100.6          43.3                6.9 +/-    0.50       9.6 +/-    0.50  0.140 / 0.230
G13     313.9          25.2                2.5 +/-    1.49       4.8 +/-    1.49  0.140 / 0.180
G17     203.0          28.6                6.1 +/-    1.76      11.0 +/-    1.76  0.080 / 0.130
G18     87.2           22.8                5.0 +/-    1.25      10.4 +/-    1.25  0.080 / 0.100
G28     292.1          55.1                4.7 +/-    2.17       5.6 +/-    2.17  0.030 / 0.030
G30     353.2          72.6                4.7 +/-    0.63       4.9 +/-    0.63  0.030 / 0.020