PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-08:58:00
G01     98.2           28.3                4.7 +/-    1.04       8.5 +/-    1.04  0.030 / 0.040
G07     116.6          51.2                7.0 +/-    0.59       8.7 +/-    0.59  0.030 / 0.030
G08     41.8           16.7                2.6 +/-    2.99       6.3 +/-    2.99  0.050 / 0.070
G11     80.9           44.1                6.4 +/-    1.68       8.8 +/-    1.68  0.060 / 0.070
G13     302.9          33.8                3.4 +/-    1.04       5.6 +/-    1.04  0.070 / 0.120
G17     208.4          42.6                7.4 +/-    0.62      10.3 +/-    0.62  0.110 / 0.120
G18     72.2           24.7                5.6 +/-    1.17      11.0 +/-    1.17  0.240 / 0.190
G19     210.0          21.0                4.6 +/-    1.22       9.8 +/-    1.22  0.180 / 0.190
G28     316.4          59.6                4.4 +/-    1.01       5.0 +/-    1.01  0.030 / 0.020
G30     50.1           80.7                5.3 +/-    1.07       5.4 +/-    1.07  0.030 / 0.020