PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-11:12:40
G01     85.6           32.7                5.9 +/-    0.96       9.8 +/-    0.96  0.040 / 0.060
G07     129.0          41.5                7.2 +/-    0.87      10.2 +/-    0.87  0.040 / 0.080
G11     63.2           37.3                4.1 +/-    0.66       6.2 +/-    0.66  0.020 / 0.030
G13     289.7          37.3                4.6 +/-    1.22       7.0 +/-    1.22  0.030 / 0.040
G17     217.3          59.0                6.7 +/-    0.72       7.6 +/-    0.72  0.080 / 0.100
G18     58.8           22.3                3.4 +/-    0.93       7.1 +/-    0.93  0.070 / 0.090
G19     216.7          26.2                4.7 +/-    0.54       9.0 +/-    0.54  0.070 / 0.190
G28     354.9          61.5                5.1 +/-    1.07       5.7 +/-    1.07  0.080 / 0.190
G30     113.9          74.8                7.0 +/-    0.95       7.2 +/-    0.95  0.080 / 0.130