PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-07:43:10
G08     275.7          21.0                4.2 +/-    1.64       9.1 +/-    1.64  0.120 / 0.220
G10     47.4           60.2                3.7 +/-    0.35       4.2 +/-    0.35  0.120 / 0.190
G14     250.9          61.6                5.1 +/-    0.95       5.7 +/-    0.95  0.100 / 0.240
G18     315.5          26.5                0.5 +/-    0.93       0.9 +/-    0.93  0.110 / 0.200
G20     87.2           41.7                5.2 +/-    0.79       7.3 +/-    0.79  0.050 / 0.070
G21     153.1          22.4                5.7 +/-    2.90      11.9 +/-    2.90  0.050 / 0.060
G24     43.2           14.9                3.1 +/-    0.96       7.6 +/-    0.96  0.030 / 0.040
G27     239.3          21.8                5.6 +/-    2.85      11.9 +/-    2.85  0.040 / 0.040
G31     179.9          22.2                5.0 +/-    1.81      10.5 +/-    1.81  0.140 / 0.320
G32     290.1          74.5                5.6 +/-    0.40       5.8 +/-    0.40  0.130 / 0.250