PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-07:57:40
G01     84.7           32.7                4.5 +/-    1.00       7.4 +/-    1.00  0.030 / 0.030
G07     129.6          40.1                5.7 +/-    0.46       8.3 +/-    0.46  0.030 / 0.030
G11     62.0           36.7                3.0 +/-    0.62       4.6 +/-    0.62  0.040 / 0.050
G13     288.7          37.5                2.9 +/-    0.89       4.5 +/-    0.89  0.040 / 0.060
G17     217.7          60.7                6.7 +/-    0.83       7.5 +/-    0.83  0.080 / 0.090
G18     57.2           21.6                1.6 +/-    1.29       3.3 +/-    1.29  0.080 / 0.090
G19     216.9          28.1                4.3 +/-    1.84       7.9 +/-    1.84  0.070 / 0.110
G28     355.0          61.5                3.1 +/-    1.69       3.5 +/-    1.69  0.100 / 0.140
G30     115.8          74.4                5.8 +/-    1.57       6.0 +/-    1.57  0.070 / 0.230