PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-09:42:40
G01     85.2           31.8                4.8 +/-    1.04       8.2 +/-    1.04  0.070 / 0.060
G07     127.9          41.3                4.8 +/-    0.84       6.8 +/-    0.84  0.060 / 0.070
G11     66.3           40.4                3.7 +/-    0.67       5.4 +/-    0.67  0.050 / 0.080
G13     290.3          38.0                3.7 +/-    1.14       5.5 +/-    1.14  0.060 / 0.060
G15     313.8          10.7               -3.6 +/-   18.00     -10.0 +/-   18.00  0.060 / 0.060
G17     215.6          53.9                5.8 +/-    0.84       7.0 +/-    0.84  0.060 / 0.070
G18     60.2           23.1                2.1 +/-    1.30       4.3 +/-    1.30  0.080 / 0.140
G19     214.8          31.6                2.9 +/-    1.48       4.9 +/-    1.48  0.040 / 0.140
G28     338.6          61.3                2.5 +/-    1.12       2.8 +/-    1.12  0.060 / 0.100
G30     111.0          75.8                6.0 +/-    0.82       6.1 +/-    0.82  0.060 / 0.140