PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-09:12:50
G01     101.0          27.2                5.2 +/-    1.35       9.7 +/-    1.35  0.040 / 0.060
G07     113.6          53.1                3.7 +/-    0.55       4.5 +/-    0.55  0.040 / 0.050
G08     41.8           19.1                1.8 +/-    1.51       4.0 +/-    1.51  0.040 / 0.050
G11     84.3           44.3                4.0 +/-    1.15       5.5 +/-    1.15  0.040 / 0.050
G13     305.3          32.4                4.6 +/-    0.99       7.6 +/-    0.99  0.060 / 0.080
G17     207.2          39.8                5.0 +/-    1.30       7.3 +/-    1.30  0.070 / 0.070
G18     74.9           24.6                3.8 +/-    1.00       7.5 +/-    1.00  0.050 / 0.130
G19     209.2          18.7               -4.9 +/-    4.45     -11.1 +/-    4.45  0.070 / 0.160
G28     311.9          59.0                3.8 +/-    1.45       4.4 +/-    1.45  0.140 / 0.400
G30     35.6           80.0                3.8 +/-    0.80       3.9 +/-    0.80  0.080 / 0.130