PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-00:42:50
G01     82.6           32.8                6.5 +/-    1.31      10.7 +/-    1.31  0.060 / 0.170
G07     130.9          36.2                8.6 +/-    0.53      13.3 +/-    0.53  0.100 / 0.220
G11     60.3           35.9                7.2 +/-    0.97      11.2 +/-    0.97  0.060 / 0.070
G13     286.6          38.0                7.6 +/-    1.74      11.5 +/-    1.74  0.060 / 0.080
G15     310.8          12.4                5.6 +/-    2.11      14.8 +/-    2.11  0.050 / 0.070
G17     218.9          62.2                9.4 +/-    1.11      10.5 +/-    1.11  0.040 / 0.080
G18     54.2           20.0                4.9 +/-    2.07      10.8 +/-    2.07  0.030 / 0.040
G19     217.3          31.9                8.6 +/-    2.32      14.6 +/-    2.32  0.030 / 0.040
G28     354.3          61.6                6.4 +/-    0.67       7.2 +/-    0.67  0.120 / 0.160
G30     120.7          71.6                8.8 +/-    0.99       9.2 +/-    0.99  0.120 / 0.090